The 365 Days of Astronomy

http://www.astronomycast.com/archive/

From June 15, 2009.

The surface of the Earth feels solid under your feet, but you're actually standing on a plate of the Earth's crust. And that plate is slowly shifting across the surface of the Earth. Over geologic timescales, plate tectonics has totally resurfaced our planet, bringing continents together, and tearing them apart. We know we have plate tectonics here on Earth, but what about other worlds in the solar system?

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and p...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From October 2025.

Today's 2 topics:

- Looking at the stars on a clear dark night, far from the artificial air glow humanity creates, have you ever wondered what it would be like to travel in truly deep interstellar space? 40 years after their launches in 1977, your representatives, the twin Voyager 1 and Voyager 2 spacecraft are in the vast space between the stars in our Milky Way galaxy...

Astronomers have observed the longest-ever gamma-ray burst — a powerful, extragalactic explosion that lasted over seven hours. Rapid follow-up observations with the U.S. Department of Energy-fabricated Dark Energy Camera and the International Gemini Observatory provided crucial information about the possible origin of this extraordinary event and the galaxy that hosts it.

Bios:

- Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.

- Jonathan Carney is a graduate student at the University of North Carolina at Chapel Hill, where he studies time-domain astronomy with a f...

From December 3, 2025.

The world we live on today has undergone dramatic change since it first formed, and time hasn't necessarily been kind. Earth has gained some weight (and a Moon) after a chance collision. A leaky gut led to some confusing internal structures. Here on the surface, mountains keep finding new ways to pop off and destroy surroundings. But scientists are helping us understand all these factors. Learn how in this episode of EVSN, and also hear about our latest tales from the launch pad.

We've added a new way to donate to 365 D...

https://www.youtube.com/watch?v=CtVKAQMNjY4

Hosted by Fraser Cain & Tim Dodd.

From  Feb 27, 2018.

NASA is going to decide between a comet sample return mission or a helicopter on Titan. Which mission should it be?

[Spoiler alert! NASA went with the Dragonfly mission.]

Tim's video:

https://www.youtube.com/watch?v=JkS2dP7eiEU

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and don...

Hosted by Steve Nerlich.

Immortality is hard work.

Episode 6a: Staying Switched On

It's difficult to achieve immortality unless you also achieve invulnerability, since even if you don't age or

get sick you can still die from a natural disaster, or a murder, or whatever. Indeed, the longer you live

the more likely some unexpected calamity may come your way. So, if your only immortal up until the

point that something goes wrong and you die, then you're not really immortal. 

Episode 6b: Ho...

https://www.youtube.com/watch?v=nUyT46ZQYsc

Hosted by Tony Darnell.

From Feb 6, 2025.

JWST Discovers Planet Formation in the Conditions of the Early Universe!

Journey with the James Webb Space Telescope to the star cluster NGC 346, a vibrant region of star birth and potential planet formation. This image offers a glimpse into the early universe, where stars formed under conditions very different from our own Milky Way.

See how JWST's infrared vision reveals protoplanetary disks - swirling clouds of gas and dust around young stars - d...

https://www.youtube.com/watch?v=l2kddFmnF5o

Hosted by: Fraser Cain and Dr. Pamela L. Gay.

Streamed live on Nov 8, 2025.

Scientific expertise is under attack on all fronts with concerns coming from politicians and the public. While most of this is unwarranted and politically motivated, there can be germ of truth. Bad science does happen, but how? How is it that papers that very few believe still make it through peer review and to publication? Why do professors at prominent universities get quoted saying things that seem to be fiction? In...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From September 2025.

Today's 2 topics:

- The lunar roving, battery powered, 4 wheel drive "Moon Buggy" allowed astronauts on Apollo 15, 16, and 17 to travel 8 mph on the lunar surface with a maximum range of approximately 4.7 mi. Some of the rocks that these space travelers brought back, from the tiny area they were able to visit on the Moon, contained volcanic glass beads with trace amounts of trapped...

Hosted by our Director, Avivah Yamani.

Today we have sky guide for the rest of December 2025, specifically curated for observers in the equatorial region with Indonesia as the based of location. While the recent dazzling Full Moon and Supermoon gave us a brilliant start, the celestial show continues with powerful planetary meetings and the most spectacular meteor shower of the year!

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as yo...

From March 3, 2020.

Hosted by Suzie Murph.

This week's news is weird. Cotton candy exoplanets called "SuperPuffs" may have rings, the Milky Way Galaxy may have been warped by a major collision, and conference COVID cancellations and uncertainty are overwhelming the news this week.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to th...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

- Dec 3-4 – Moon 0.8° N of Pleiades (Occults stars in Virginia)

Carbon Star U Lyr best tonight

- Dec 4 – Full Moon in Taurus

- Dec 7 – Jupiter 4° South of Moon

Mercury Greatest Elongation 21° from Sun in morning Sky

Endymion sunset rays visible on Moon

- Dec 7-8 Moon and M44

- Dec 8 – 16 Psyche at Opposition 9.4 magnitude

Asteroid 16 Psyche is a large, metal-rich asteroid, thought to be the exposed core of a p...

Paul Hill and Dr. Jenifer "Dr. Dust" Millard host. 

Damien Phillips, John Wildridge and Dustin Ruoff produce.

This episode it is a new bananza with discussion of the Thirty Metre Telescope, shenanigans on Mars, asymmetrical supernovae and more trouble in the world of cosmology. There is a Xmas Telescope buying guide as well as our monthly skyguide!

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

What happens to a white dwarf when it cools off? How long does it take? Do they just stay black forever, or will something more interesting happen to them someday? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman fo...

https://www.youtube.com/watch?v=MI7BBHAhdSo

Hosted by: Fraser Cain and Dr. Pamela L. Gay.

Streamed live on Nov 9, 2025.

We are powerless fans of space exploration. But what if some fool gave us the authority and funding to make our space dreams a reality? Someone asked us what we'd do with a billion dollars. What missions? Which telescopes? But what if we had more? 100 Billion! A trillion! All the monies! You keep asking, and this week we answer you! Come hear what Fraser and Pamela would do if they were given...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From September 2025.

Today's 2 topics:

- The Sun is our very own well behaved star. It rises and sets in our sky every day and powers and makes possible all life forms on planet Earth. A new appreciation for our Sun is growing as we learn more about other suns and their families of planets. The Trappist-1 system of 7 planets orbits a dim M type...

Hosted by our Director, Avivah Yamani.

In Japanese folklore Tokuzou was a great mariner from Osaka who relied on Polaris (as we europeans call it), the North Star for navigation at sea. Then one night his wife saw that it had shifted out of place and she was afraid that her husband wouldn't be able to find his way back home!

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as yo...

From April 21, 2021.

Researchers looked for a slowdown in black hole rotational speeds due to the collection of ultralight bosons, but they found nothing, eliminating the hypothetical particle from the list of possible dark matter particles. Plus, neutrino hunting, neutron stars, and a space hurricane.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to them to...

Episode 207.

Today's guest: Professor Thomas Hockey, with the University of Northern Iowa, is the recipient of HAD's 2026 LeRoy E. Doggett Prize, which is awarded biennially to an individual who has significantly influenced the field of the history of astronomy by a career-long effort. In our interview, we'll hear about his background and explore some of his many achievements. This is the first of multiple episodes presenting our interview with him.

H'ad astra historia is the official podcast for the Historical Astronomy Division of the American Astronomical Society. We're here to share stories from a...

Hosted by Steve Nerlich.

From October 14, 2024.

Episode 5 — Too much is never enough.

Cheap Astronomy's vision for space exploration: build whopping-big telescopes and send the robots.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to them too! 

Every bit helps! Thank you!

------------------------------------

Do go visit...

https://www.youtube.com/watch?v=_BOqF2XknOc

From Jan 12, 2018.

Hosted by Tony Darnell.

Like this content? Please consider becoming a patron: 

https://www.patreon.com/profile/creators?u=2493405

On January 11, 2017 the Spitzer and Hubble Space Telescope missions released an amazing flythrough of the Orion Nebula, or M42.  Never before have we had such a detailed look at this naked eye object in two wavelengths.

Using actual scientific imagery and other data, combined with Hollywood techniques, a team at the Space Telescope Science Institute in Bal...

https://www.youtube.com/watch?v=panahVzZ6nw

Hosted by: Fraser Cain and Dr. Pamela L. Gay.

Streamed live on Nov 9, 2025.

It's time once again for our annual gift giving guide. We've got recommendations for books, movies, TV shows, games and of course astronomy gear to satisfy the space nerds in your family. The Christmas season is almost upon us, and with it comes excuses to inject science into the lives of those you love... or ask for them to give you that book, lens, or art print you already know you'll love...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From August & September 2025.

Today's 2 topics:

- When it was first spotted by astronomers at Space Watch on Kitt Peak, 2008 GO98 appeared to be one of many outer main belt asteroids moving through the night sky. 9 years later when my Catalina Sky Survey teammate Greg Leonard observed it with our 60 inch telescope on Mt. Lemmon it had a coma and a tail like a comet...

Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela & Dr. Daniel Cunnama.

Watch the whole show on YouTube! [Editor's note: Start at 20:28 where the audio starts with some rocking marimba action! The last 5 minutes here are more tunes from the marimba band.]

https://www.youtube.com/live/Dgw6mz5bTG4?si=xAr-fa0GvLwpT-pc

This week, join us for a special live episode from the 2024 IAU General Assembly in Cape Town, South Africa, featuring black hole simulations expert Dr. Nicole Thomas and winner of the 2011 Nobel Prize for Physics Prof. Brian Schmidt.

From May 10, 2022.

A luminous black hole already classified as an active galactic nucleus brightened suddenly in recent ground and space observations, and the cause may be due to a sudden flip in the magnetic poles. Plus, community science, rockets, Ingenuity, and an interview with Dr. Cathy Weitz from Planetary Science Institute.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends an...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

Our friend Mark Radice joins us to talk about his recent trip to Namibia where he helps run astronomy tours at a ranch.

Great fun observing with guests and celestial sights including:

- Alpha Centauri double star

- 47 Tucanae – simply stunning

- Comet SWAN (couldn't see Lemon)

- Milky Way constellations

- NGC 253 galaxy; M8 Lagoon; Tarantula Nebula

- Saturn

- Neptune

- Moon

...

https://www.youtube.com/watch?v=SHfUbNRO-3A

From Mar 14, 2018.

One of the biggest problems of spaceflight is the total lack of gravity. Here are some proposals that could generate artificial gravity through rotating spacecraft.

Sign up to my weekly email newsletter:

https://www.universetoday.com/newsletter

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the pod...

Hosted by Dr. Paul M. Sutter.

How did we discover the weak nuclear force? Why is it so strange compared to the other forces? What do mirrors have to do with all of this? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, ph...

https://www.youtube.com/watch?v=whMphW1Tb5I

Hosted by: Fraser Cain and Dr. Pamela L. Gay

Streamed live on Nov 8, 2025.

With the arrival of the comet 3I/Atlas (Asteroid Terrestrial-impact Last Alert System), the world is getting a crash course in comets, their behavior, and of course their tails. Today we're going to talk about comets and their tails, why they exist, how they grow, why they can be different colors and how they can be sometimes point AT the Sun.

Comets are one of the most a...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From August 2025.

Today's 2 topics:

- The Trappist-1 planetary system located about 40 light years away in the constellation of Aquarius consists of a small red dwarf star and 7 Earth sized planets. By carefully studying changes in the planet's transit timings and the shape of the dip in the host star's brightness as each planet transits across it, astronomers have been able to measure the orbital...

Episode 11.

"ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating science and arts.

Exodus CL Sit, also known as the ASTROMAN, is a transmedia astronomy educator, popular science author, STEAM educator, and science communicator in Hong Kong. He is recently the National Astronomy Education Coordinator (Chair of Hong Kong, China) of the International Astronomical Union and President of Starrix. He was a...

From November 5, 2025.

In this episode, we look at some of our latest discoveries about the formation of star systems, including planets and moons, and the growth of black holes. We also take a closer look at our brightening skies, and the missions set to make things worse. We also cover the latest tales from the launch pad.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Sh...

Hosted by Andy Poniros.

Info: Author, fighter pilot, test pilot, & veteran of 5 Space Shuttle missions, Captain Robert "Hoot" Gibson discusses his books, as well as his fighter pilot experiences in the Vietnam war, & his Space Shuttle missions... Including piloting the 1st untethered astronaut spacewalk, mission STS-41B & his perilous top secret mission STS-27R.

Intro Music: "A Moment in Space History", Andy Poniros

Outro Music: "Funk 2001", Larry Benigno

Organization: Cosmic Perspective Radio

We've added a new way to donate to 365 Days of Astronomy to support ed...

https://spacescoop.org/en/scoops/2524/lonely-planet-the-hungriest-found-in-space/

Hosted by Richard Drumm, our editor.

You've probably heard of exoplanets. Planets that orbit stars other than our Sun. But did you know that there are objects with a mass similar to a planet that float free in space, that don't orbit a star? These lonely wanderers are called rogue planets.

Recently, a team of astronomers discovered a very special one in the southern constellation Chameleon. The rogue planet is named Cha (for Chameleon) 1107-7626 and is located about 620 light-years away. It has a mass o...

Hosted by Tony Darnell.

From August 17, 2024.

An international team of astronomers has directly imaged this exoplanet, one of the coldest ever seen.  The team observed Epsilon Indi Ab using the coronagraph on Webb's Mid-Infrared Instrument. Only a few tens of exoplanets have ever been directly imaged by space- and ground-based observatories.  These observations are ushering in a completely new era in exoplanet research.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and dona...

https://www.youtube.com/watch?v=14QKJkt3cIE

Streamed live on Nov 3, 2025.

Hosted by: Fraser Cain and Dr. Pamela L. Gay.

It is arguable that humanity now has the technological ability to live on Mars. It would be done at enormous expense and sacrifice, and there are some tricky problems that we haven't solved yet. Although we could live on Mars, should we? There is a famous quote from Jurassic Park: "Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should." This concept is...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From July & August 2025.

Today's 2 topics:

- 24 hours a day, 16,600 feet above sea level in the high dry desert of northern Chile, the 66 antennas of 1.4 billion dollar Atacama Large Millimeter/submillimeter Array or ALMA receives signals located between the infrared and radio portions of the electromagnetic spectrum. The waves that ALMA receives have a length which is about the same as the thickness of a...

Hosted by Avivah Yamani, our Director.

From latin "nebula" to stellar nurseries & ghostly shells, this episode dives into emission, reflection, dark, planetary nebulae and supernova remnants. These are the cosmic clouds at the start of star life and at the end of star life. Cradles and echoes of starlight, all in one story!

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with yo...

From April 14, 2021.

Fermilab released the first results of their Muon g-2 experiment this week, and the fundamental particles don't behave as predicted by the Standard Model of particle physics. Plus, dust, more dust, Martian water (again), and a review of Packing for Mars by Mary Roach.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

Episode 507.

Paul Hill, Ralph Wilkins and Dr. Jenifer "Dr. Dust" Millard host. 

Damien Phillips, John Wildridge and Dustin Ruoff produce.

November Part 1.

Time for a Comet 3I/ATLAS deep dive, a chat about Paul's recent visit to the Cerne Abbas Starparty in Dorset and our new extended skyguide.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and...

Hosted by Dr. Paul M. Sutter.

Is the Universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what's beyond them? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology co...

http://www.astronomycast.com/archive/

From April 29, 2007.

What a week! Astronomers announced the discovery of an Earth-sized planet orbiting the nearby star Gliese 581! We talk about the technique used to discover the planet, the possibilities of finding even smaller planets, and what the future holds for finding another Earth.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends an...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From July 2025.

Today's 2 topics:

- When Asteroid hunters discover a new object it is given a score ranging from 0 which means it is likely to be a distant main belt asteroid up to 100 which means that it is likely to come near to us. Each newly discovered asteroid which receives a score of 65 or greater is posted on the Minor Planet Center's Near Earth...

https://www.youtube.com/watch?v=a8dASH8Bg_M

From  Oct 19, 2015.

Doesn't it feel like the Universe is perfectly tuned for life? Actually, it's a horrible hostile place, delivering the bare minimum for human survival.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to them too! 

Every bit helps! Than...

From October 15, 2025.

The Universe is hard enough to figure out without one kind of object dressing up as another, but - just in time for Halloween - researchers have figured out that the Little Red Dot in the early Universe just might be massive black holes surrounded in a costume of glowing red gas. Also in this episode, Hyabusa2's amusingly tiny destination, a white dwarf star eating what may be an icy dwarf planet, and tales from the launch pad.

We've added a new way to donate to 365 Days of Astronomy to s...

Today's guest: 

Prof. Kenneth Rumstay, emeritus of Valdosta State Univeristy, talks with us today about the history of the Historical Astronomy Division. We'll learn not only about how it got started, but also about how HAD works for its members today.

H'ad astra historia is the official podcast for the Historical Astronomy Division of the American Astronomical Society. We're here to share stories from and about the people who study the stars, planets, and the cosmos. We'll be hearing from individuals who not only study the history of astronomy, but also those who li...

Hosted by Steve Nerlich.

Dear Cheap Astronomy – What is the right message to send to the aliens?

Keen listeners may be familiar with Cheap Astronomy's ongoing despair at Earth's lacklustre

attempts at communication with the wider Universe. A few episodes back we ran through a

history of deliberate communications to date, about 90 per cent of which have been music – well

mostly digitized and some analog radio transmissions of music.

Dear Cheap Astronomy – Can we drill through the ice and find life on Europa?

Firstly...

Hosted by Tony Darnell.

From  Dec 19, 2019.

Get Stellina Telescope Here (affiliate link): http://bit.ly/2WJrPzr

Here are my thoughts on a brand new telescope for amateur astronomers that was released by Vaonis, a  French company that has done something remarkable with the Stellina telescope, they've created a fully-automated, self-contained optical system that is unlike anything I've seen before.  This telescope is a real paradigm shift for amateur astronomy, never before has getting into the hobby been easier.

We've added a new way to donate to 365 Days of As...

https://www.youtube.com/watch?v=vSVS2x-8eG4

Hosted by: Fraser Cain and Dr. Pamela L. Gay

Streamed live on Oct 20, 2025.

New instruments bring new mysteries, and when James Webb came on line it uncovered a collection of strange, compact, bright objects shifted deeply into the red end of the spectrum. These were dubbed "Little red dots" or LRDs. And the astronomical community continues to puzzle over what they are. When JWST first peered into the distant past, it discovered the early universe had a rash of little red dots. Their existence...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From July 2025.

Today's 2 topics:

- Recently, my Grandsons, Dane and Hank joined our asteroid hunting team at the Catalina Sky Survey 60 inch telescope on Mt. Lemmon. The most interesting of our discoveries, 2017 KJ32 is only 16 feet in diameter, orbits the Sun once every 315 days, and can come closer to us than the communications satellites. 

- My Catalina Sky Survey teammate Ca...

From July 31, 2024.

Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela & Dr. Daniel Cunnama.

In this double feature episode, Jacinta interviews two amazing astronomers at the SARAO conference (South African Radio Astronomical Observatory).

Dr. Mpati Ramotsoku is a radio astrophysicist from South Africa. In the episode she discusses her journey from studying in the Netherlands to working in Italy at the Italian National Institute of Astrophysics in Cali, and eventually returning to South Africa as a research associate at Rhodes University. She delves into her research on how galaxies evolve by studying h...

From April 13, 2021.

A new study examined the effects of recent increases in the number of space objects orbiting Earth and found that the proliferation of satellites contributes to a nearly ten percent increase over natural lighting of the night sky. Plus, Mars, Uranus, Neptune, ancient Earth, volcanoes, and our weekly What's Up segment.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with yo...

https://www.youtube.com/watch?v=D6vU3-LGrgM

From Jul 11, 2016.

Stars can spin faster or slower than the Sun. What's the fastest that's ever been discovered, and what's the fastest speed you can have before they tear themselves apart? Everything in the Universe is spinning. Spinning planets and their spinning moons orbit around spinning stars, which orbit spinning galaxies. It's spinning all the way down.

Consider that fiery ball in the sky, the Sun. Like all stars, our Sun rotates on its axis. You can't tell because staring at the S...

Those tricky next steps.

Dear Cheap Astronomy – Could war get us into space?

There's been a long-running dialogue here at Cheap Astronomy about what economic drivers

might transform us into a proper spacefaring species with Moon bases, Mars bases and all that.

And well, its been hard to think what economic drivers really might work. Space is hard and it's

also darned expensive. Tourism could be a driver, after all there has been a bit of millionaire

tourism happening, mostly just flights above the atmosphere.

Why did we develop the International Space Station in the first place? What have we learned in its 25+ years of operation? When is it coming down, and why? And what's coming up next? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology co...

https://www.youtube.com/watch?v=Oi72aaDhl0A

Hosted by: Fraser Cain and Dr. Pamela L. Gay

Streamed live on Oct 13, 2025.

So it's been decades since we've seen a bright comet in the sky. And actually there was a pair — Hale-Bopp and Hyakutake. And then, silence! And unmet promises by the Universe to give us a bright comet. Comets are unpredictable, and they arrive precisely when they intend to. Is it time again for a bright comet? If you asked us in January if 2025 was going to have any outstanding comets would fl...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From June 2025.

Today's 2 topics:

- When we find a planet which appears to have the chemical signs of living organisms in its atmosphere, the desire to take a close up look at it will be hard to contain. In a Scientific American article, Lee Billings describes Yuri Milner's 100 million dollar project "Breakthrough Starshot" which has been created to leap frog our current rocket technology's...

Episode 10. How to become a citizen scientist!

"ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating science and arts.

Exodus CL Sit, also known as the ASTROMAN, is a transmedia astronomy educator, popular science author, STEAM educator, and science communicator in Hong Kong. He is recently the National Astronomy Education Coordinator (Chair of Hong Kong, China) of the International Astronomical Union a...

From Aug 31, 2020.

Join us today as we examine observations for dual quasars in the process of merging and a star being torn apart by its supermassive black hole. Plus, Hubble data used to map a halo around the Andromeda galaxy.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to them too! 

Every bit...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

The Actual Astronomy Podcast Episode 503 presents M55, Helix Nebula and other Observations. In this episode we talk about a long list of observing targets from the globular star cluster M55, the Helix planetary nebula and other objects. We read a listener who emails us a sky tour for the late summer as well.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365Da...

https://www.youtube.com/watch?v=qWfkW2y-hAQ

From Oct 15, 2019.

Even as the first rockets were launched into space decades ago, aerospace knew it was a wasteful process. Rocket stages, motors, and complex equipment crashed into the ocean or burned up in the Earth's atmosphere. Could spaceplanes bring the costs down? Flying to orbit with a combination of jet engines and rockets and then safely re-enter the Earth's atmosphere again.

Single-stage to orbit spacecraft and spaceplanes have always seemed out of reach, and actually not that practical. But what about a t...

From October 2023.

Hosted by Tony Darnell.

The search for life on other worlds is, to say the least, a daunting and overwhelming task. We've been searching for only about one human generation and have yet to find anything in our own solar system, let alone the vast expanse of our galaxy.

To increase our chances of finding life on other planets, a systematic approach needs to be adopted, one that applies reasonable assumptions that maximize our success.  So, an important question becomes, where should we point our telescopes?

W...

https://www.youtube.com/watch?v=mCqRhiApwMQ

Season 19

Hosted by: Fraser Cain and Dr. Pamela L. Gay

Streamed live on Oct 6, 2025.

You can only describe a black hole by its mass and its spin. And maybe it's charge. But allow us to propose a new criteria: the personal experience. Some black holes have seen things… Experienced the laws of physics at their most extreme. And today we'll tell their stories. The more of the sky we observe, the more bizarre situations we find black holes in. Let's explore!

T...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

Today's 2 topics:

- Recently Dr. Yossi Shvartzvald led a team which published their discovery of an Earth sized planet using microlensing in the Astrophysical Journal Letters. The newly discovered planet OGLE-2016-BLG-1195Lb orbits a small dim object about 13,000 light years from us. With only 7.8% of the Sun's mass the new planet's star may be a brown dwarf and not a star at all. At about...

Astronomers have long predicted that the cloud forming chemical should be found in the atmospheres of brown dwarfs and gas giants. Silane had eluded detection until now. In this podcast, Dr. Aaron Meisner recounts how silane was discovered in the atmosphere of a brown dwarf nicknamed "The Accident". The Accident (WISEA J153429.75-104303.3) was discovered by citizen scientist Dan Caselden, who was using an online program he built to find brown dwarfs in NEOWISE data.

Bios: 

Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.

...

The Gemini South Observatory, using adaptive optics, has captured stunning new images of meandering stellar jets. The sidewinding appearance is likely caused by gravitational influences of nearby companion stars. Plus, exoplanet news and a review of a Canon lens.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon link to them too! 

Every bit helps! Thank you...

Awesome Astronomy - The Search for Aliens with Seth Shostak

https://www.youtube.com/watch?v=Bj6Wfv1djf0

Paul Hill, Ralph Wilkins and Dr. Jenifer "Dr. Dust" Millard host. 

Damien Phillips, John Wildridge and Dustin Ruoff produce.

From Jan 3, 2022.

Our chat with Dr. Seth Shostak from our live show to ease the boredom of covid lockdowns. 

We talk about:

• The latest in the search for alien signals.

• Using the large New Mexico telescope array to search for ET.

• How ancie...

https://www.youtube.com/watch?v=Q41hLHcKyUM

From Mar 21, 2018.

Have you ever wondered how those amazing pictures of space are gathered? Which are photographs, which are illustrations, and which are total fakes?

[Editor's note: You'll have to go to the YouTube link above to see the photos.]

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your fr...

How to smash a particle.

How do particle colliders work? What kinds of energies are we talking about? Are there any uses for colliders except for physics experiments? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman fo...

https://www.youtube.com/watch?v=kXkqLQ1oBk8

End-of-Life Planning for Your Spacecraft!

Streamed live October 1, 2025.

Your spacecraft has reached the end of its mission. You've done everything you can to keep it operational, but now it's time to say goodbye. How do space agencies deal with spacecraft to shut them down gracefully, protect future missions and life on other worlds. So, the time has come to see your mission across the Rainbow Bridge. How exactly do you say goodbye? Let's discuss. 

Support our shows through https://Patreon.com/As...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From May 2025.

Today's 2 topics:

- When a fleet of interstellar spaceships leaves our solar system for a planet circling a nearby star the most important of all of the riches that human explorers will carry with them will be libraries of our planet's DNA and the seeds of plants. They are the connection between past life, the inorganic world, and future life.

  Duration: 00:06:05

Paul Hill and Dr. Jenifer "Dr. Dust" Millard host. 

Damien Phillips, John Wildridge and Dustin Ruoff produce.

October Part 1.

Paul & Jen chat about the big submerged crater off Yorkshire, the return of the ozone hole, NASA's apparent decline, Astro Camp and the several comets we have on tap for October & November! Bit of a mixed bag, really…

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you c...

From September 17, 2025.

In this week's episode, we tell the story of a Giant Blue Star that made the terrible, terrible mistake of trying to nibble on its more evolved sibling; it's black hole of a sibling. Folks, don't eat the dark holes in spacetime. We also look at this week's news, including lumpy planets, forming planets, asteroids getting up close and personal, and how Leopard spots are in style for life hunting Mars Scientists. We also have tales from the launch pad.

We've added a new way to donate to 365 Days of Astronomy t...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

The Actual Astronomy Podcast presents Episode 502: The Observer's Calendar for October 2025. In this episode we talk about a long list of observing events from Carbon stars to many shadow transits of the Moon of Jupiter. Don't miss the Orionid meteor shower and catch Saturn with its rings edge on! We also discuss some stars and deep sky objects and two bright comets coming our way!

https://www.youtube.com/watch?v=NkPhmtJRvsM

From  Jan 24, 2019.

As astronomers find more and more planets around other stars, the big question we want to know is: are they habitable, could there be life there?

The vast majority of stars in the Milky Way are red dwarf stars, and most of the planets in habitable zones have been found orbiting these cooler, less massive stars. What are the chances that life could get going on these worlds?

We've added a new way to donate to 365 Days of Ast...

Hosted by Richard Drumm, our Editor.

The word of the day today is parallax! Specifically stellar parallax.

So what's parallax & what does it mean to astronomers? As it happens, I was part of the UVA Parallax team in the early 1980s. Best part-time job ever! So for once I might know a little bit about what I'm talking about! I'll do my best to describe it so you can understand the science.

An easy method to help grasp the concept is for you to hold out your thumb at arm's length a...

https://www.youtube.com/watch?v=2NupNyOy4-0

Streamed live on Sep 22, 2025.

We don't launch a lot of rockets every year, so their impact on the environment is minimal compared to other forms of transportation. But that number is steadily increasing with rates that we'll have to take seriously. What's the current and future impact of rockets on the environment Rocket facilities are often surrounded by wildlife preserves and they always fly through our atmosphere. Let's take a look at how launches do and don't impact the environment around them from the surface of Earth...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From May 2025.

Today's 2 topics:

- On May 5, 2014 when I discovered 2014 JO25 with the Catalina Sky Survey's 60 inch telescope on Mt. Lemmon, Arizona it was the brightest, fastest asteroid I had ever seen. In April of 2017, 2014 JO25 returned to come within 1.1 million miles of us at 21 mi/s. This rare, very close approach by an asteroid, of 2014 JO25's size allowed scientists at NASA's Goldstone...

Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela & Dr. Daniel Cunnama.

This episode of Cosmic Savannah features Professor James Chibueze, a distinguished professor at the University of South Africa, discussing his research on star formation using radio astronomy.

During the episode, Prof Chibueze discusses his journey to become a professional astronomer and how he got interested in radio astronomy. Prof Chibueze also gives some insight into his experience doing his PhD in Japan and even having to learn Japanese. James also discusses his work on studying young spinning stars which produce bipolar outflows. Duration: 01:03:09

From May 22, 2020.

Join us today as we talk about radio transmitters found in the twinkling heart of the Milky Way. Then we'll look at an asteroid that has a comet-like tail. And finally, Bennu is about to be sampled by OSIRIS-Rex, and we helped make that happen!

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send the Patreon li...

https://www.youtube.com/watch?v=yH4uczqmhQ0

From Jan 20, 2023.

The James Webb Space Telescope took time away from finding the earliest galaxies or imaging incredible nebulae to test out its planet hunting capabilities. To say it was immediately successful would be an understatement. JWST is showing us that it can do almost anything in astronomy and cosmology.

Its latest trick is picking out an exoplanet candidate, confirming it exists and telling us about this alien world. LHS 475 is a red dwarf star 41 light-years away from our Solar System in the s...

Are we alone, and if so can we have all the planets?

Dear Cheap Astronomy – Alien diplomacy?

A recent paper by John Gertz called Interstellar Diplomacy suggests some kind of contact with

aliens is inevitable, which seems reasonable with respect to some kind of radio transmission,

but the paper then goes on to suggest that contact might involve a robotic scout vehicle sent

here from an a distant alien civilization, which seems somewhat less inevitable and then it

descends into farce by further suggesting such scouts might ha...

Echoes of the Big Bang!

What are some sources of gravitational waves that aren't black holes? How did inflation create gravitational waves? How can we possibly detect them? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman fo...

https://www.youtube.com/watch?v=4GhRypmWaCY

Streamed live September 17, 2025.

This week, we look at the process behind rockets getting licensed to launch, and everyone around the pad getting notified to stay away as T-0 approaches. (Can you say "errant boat"?) We have a saying around here: "One does not simply book a return trip from a rocket launch." That's because they are an intensely complex chain of events that need to go right before it's wise to let that rocket leave the launchpad. 

We've added a new way to donate to...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From April 2025.

Today's 2 topics:

- Greg Leonard was observing with our team's 60 inch telescope on Mt. Lemmon in Arizona when he discovered a relatively large space rock, 2017 FD157, which can theoretically come closer to the Earth's surface than the communications satellites!

- Dr. Paul Wiegert of Western University in Canada, led a team of astronomers who have determined that 2015 BZ509, a 2 mile...

Episode 9.

"ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating science and arts.

Exodus CL Sit, also known as the ASTROMAN, is a transmedia astronomy educator, popular science author, STEAM educator, and science communicator in Hong Kong. He is recently the National Astronomy Education Coordinator (Chair of Hong Kong, China) of the International Astronomical Union and President of Starrix. He was a...

From May 14, 2020.

Join us today as we talk about one of my favorite areas of research, pulsating stars, and how researchers have used data from NASA's TESS mission to understand them. We also look at new evidence for watery plumes erupting from Jupiter's moon Europa. And finally, we discuss how the SOFIA observatory has found clues for why Pluto's atmospheric haze continues to exist.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

Episode 500!

The Actual Astronomy Podcast presents Constellation Taurus. In this episode Chris and Shane celebrate their 500th episode by exploring all the nebulae and star clusters in Taurus. 

Taurus the Bull charges, head down toward Orion. The unmistakable V-shaped pattern marks the Hyades, catalogued as Melotte 25; this is the nearest open cluster at 153 light-years. First-magnitude Aldebaran burns red as the eye of the bull, but it is an accidental member being almost three times closer.

https://www.youtube.com/watch?v=0h_ckjhGdjs

From  Feb 2, 2019.

Geologists think they've found the oldest Earth rock ever seen. And they found it in one of the last places you'd ever suspect, on the Moon. When the Apollo 14 astronauts returned their lunar samples back to Earth, they were carrying one rock that had formed on Earth 4 to 4.1 billion years ago, which was carved out of our planet during the time of intense bombardment and delivered to the Moon.

We've added a new way to donate to 365 Days of Astronomy to su...

https://www.youtube.com/watch?v=Z3287bkIOiM&ab_channel=DeepAstronomy

Hosted by Tony Darnell.

From  Oct 22, 2024.

Your Sky Tonight is produced by Deep Astronomy and made possible by members of this YouTube Channel.  Thank You!

In this episode, we look at how to locate the Orion Nebula in the night sky.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Sh...

https://www.youtube.com/watch?v=op5hkKFWFlM

Season 19.

Streamed live Sep 8, 2025.

Welcome to the first episode of our 19th season! This week we look at objects coming from other solar systems that come passing on by our Sun. During the summer hiatus the 3rd interstellar object was discovered: Comet 3I/ATLAS! So now we have 3 different interstellar interlopers to compare & contrast. What are we starting to learn about other star systems from this small sample size and how will our detection get even better?

[Editor's note: HiRISE's telescope is 1/2 meter.]<...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From April 2025.

Today's 2 topics:

- In 2013 a 56 foot diameter space rock exploded over Chelyabinsk, Russia releasing the energy of 450 kilotons of TNT and filled local hospitals with some of the 1,500 people who were injured. Fortunately no one died. In 1908 a 200 ft diameter meteor exploded over a largely unpopulated region at Tunguska, Siberia knocking down trees over a 750 square mile area. If it had hit...

Since their first detection, powerful bursts of X-rays from distant galaxies, known as fast X-ray transients (FXTs), have mystified astronomers. FXTs have historically been elusive events, occurring at vast distances away from Earth and only lasting seconds to hours. Einstein Probe (EP), launched in 2024, is dedicated to observing transient events in the X-ray and is changing the game for astronomers looking to understand the origin of these exotic events. In this podcast, Dr. Robert Eyles-Ferris discusses a recent FXT and what it reveals about the deaths of massive stars. 

Bios: 

- Rob Sparks is...

From September 3, 2025.

In this week's episode, we take a look at the impact SpaceX launches from the Space Coast will have on their competitors and those living, working, and going to school near Kennedy and Cape Canaveral. We also look at a bunch of new science discoveries, including the origins of Ryugu & Bennu, the solar system shocked itself, a new supernova that blew off an unusual number of layers before exploding, and quick updates on Psyche, Juno, JUICE, and the number of moons orbiting Uranus.

We've added a new way to donate to 365 D...

Hosted by Avivah Yamani, our Director.

We are exploring the word Equinox. We start by having the definitions, why "equal night" isn't quite exact, how spring/autumn flip between hemispheres, and a whirlwind tour of equator monuments from Pontianak to Macapá, Cayambe, Kayabwe, Nanyuki, Ilhéu das Rolas, and Bonjol.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends and send...

https://www.youtube.com/watch?v=L1otYvmqp6w

Hosted by Fraser Cain.

From Jul 19, 2016.

Some of the greatest discoveries in astronomy have been made by watching how the skies change over time. Today we talk about these techniques, and an observatory that will revolutionize time-based astronomy.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. 

Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!

Share the podcast with your friends an...

How do we measure the sizes of stars? What are the biggest ones today, and how big could stars have gotten in the past? Is there any way for a star to cheat and get even bigger? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, as...

http://www.astronomycast.com/archive/

From September 14, 2009.

We think we live near an average star, but that's not the case at all. Compared to most stars in the Universe, the Sun is a giant! Let's look at the small end of the stellar spectrum, to stars with a fraction of the size and mass of our own Sun. There are many ways that a star can get small, and they lead dramatically different lives and deaths.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, a...

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From November 2024.

Today's 2 topics:

- My Catalina Sky Survey teammate Carson Fuls was using the new hundred million pixel camera on our team's Schmidt telescope located on Mt. Bigelow, Arizona, when he discovered 2017 AG13. It passes near the Earth's orbit twice a year on its own 345 day path around the Sun. When Carson spotted it, 9 lunar distances from him it was heading in our...