The 365 Days of Astronomy
The 365 Days of Astronomy podcast launched in 2009 as part of the International Year of Astronomy. This community podcast continues to bring you day after day of content across the years. Everyday, a new voice, helping you see the universe we share in a new way. This show is managed by Avivah Yamani, edited by Richard Drumm. This podcast is funded through Patreon.com/CosmoQuestX and produced out of the Planetary Science Institute.
Astronomy Cast Ep. 774: How Does Bad Science Happen?
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...
Travelers in the Night Eps. 355E & 356E: Moon Water & Interplanetary Sand Traps
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...
December Sky Guide for Equatorial Region
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.
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EVSN - Cotton Candy Super Puffs, the Warped Milky Way Galaxy & Conference Chaos
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.
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Actual Astronomy - Observer's Guide - December
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...
Awesome Astronomy - December Part 1: Icy Telescopes & Martian Lightning
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.
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...Ask A Spaceman - Ep. 261: What are Black Dwarfs?
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
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Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman fo...
Astronomy Cast Ep. 773: What Would You Do With $1 Billion For Astronomy?
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...
Travelers in the Night Eps. 353E & 354E: Peaceful Star & Martian Debris
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...
Folklore - Tokuzou's Star: When the Northern Star Moved
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...
EVSN - Another Potential Dark Matter Particle Isn't Found
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.
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H'ad Astra Historia - The 2026 Doggett Prize, Part 1
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...
Cheap Astronomy - Implausible Engineering: Building A Telescope Big Enough To See Aliens
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.
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Every bit helps! Thank you!
------------------------------------
Do go visit...
Deep Astronomy - The Amazing Orion Nebula As Seen By Hubble & Spitzer Space Telescope
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...
Astronomy Cast Ep. 772: 2025 Gift Guide
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...
Travelers in the Night Eps. 351E & 352E: Active Asteroid & Flying Mud Balls
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...
The Cosmic Savannah Ep. 76: First Ever Live Show Debut at Astronomy Olympics
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.
EVSN - Active Black Hole's Surge in Brightness Due to Magnetic Flip
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.
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Actual Astronomy - Mark Radice's Recent Astronomy Adventures
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
...
Guide To Space - What Will It Take To Stay Healthy In Space? Practical Artificial Gravity
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.
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We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.
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Ask A Spaceman Ep. 260: What's the Big Deal with the Weak Force?
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...
Astronomy Cast Ep. 771: Comet Tails
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...
Travelers in the Night Eps. 349E & 350E: Trappist-1 Planets & Brute
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...
ASTROMAN - Dark Sky Astrophotography in Dark Sky Regions
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...
EVSN - JWST's Picture Album of Baby Stars, Planets, Moons & More
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...
Cosmic Perspective - Veteran of 5 Space Shuttle Missions, Capt. Robert "Hoot" Gibson
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...
UNAWE Space Scoop: Lonely Planet — The Hungriest Exoplanet
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...
Exoplanet Radio - Epsilon Indi Ab: A Twin of Jupiter
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...
Astronomy Cast Ep. 770: The Ethics of Mars Exploration
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...
Travelers in the Night Eps. 347E & 348E: Life's Parts & 2 Headed Space Worm
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...
Space Stories - Cradles in the Cosmic Mist: Meeting the Nebula
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...
EVSN - Strong Evidence Found That Muons Deviate From Standard Model
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.
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Share the podcast with your friends and send the Patreon link to...
Actual Astronomy - Observer's Calendar For November
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com
Episode 507.
1st - Carbon Star V Air best tonight 2nd - Saturn Neptune and Moon congregate in evening sky 4th - Two Shadows on Jupiter IO and Euorpa after 10pm here for us so that's midnight EST. 5th - Full Moon (closest moon of the year) Asteroid Victoria at opposition. Asteroid "12 Victoria" is a large S-type (stony) asteroid in the main asteroid belt, discovered in 1850 by J.R. Hind. It orbits between Mars and Jupiter, recently, a meteor event occurred over Victoria...Awesome Astronomy - Comet 3I/ATLAS & Cerne Abbas Star Party
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.
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Share the podcast with your friends and...
Ask A Spaceman Ep. 259: Where Exactly is the Edge of the Universe?
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...
Astronomy Cast Ep. 34: Discovering Another Earth
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.
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Share the podcast with your friends an...
Travelers in the Night Eps. 345E & 346E: Asteroid Alert & Finding Treasure
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...
Guide to Space - Is The Universe Perfect For Life? Understanding the Anthropic Principle
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...
EVSN - Giant Black Holes Cosplay as Little Red Dots
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...
H'ad Astra Historia - Ep. 206: The History of HAD
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...
