The 365 Days of Astronomy

Hosted by Avivah Yamani, our Director.

It's time for a Blue Moon this year! And observers also have the chance to enjoy planetary dances with the Moon and meteor showers!

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

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Do go...

From April 30, 2026.

As commercial space becomes a more and more mature industry, we're seeing new needs emerge. Front and the center is the need for someone - or some company - to make it easy for folks in need of a launch to find the right ride share for their satellite, no matter how small. Enter ExoLaunch. In this episode we talk with ExoLaunch CEO Robert Sproles about what their company is accomplishing as the shipping company to the stars (or at least Earth Orbit).

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

https://www.youtube.com/watch?v=Xryd9cC8ZWU

Hosted by Fraser Cain.

From Jul 4, 2018.

For the first time ever, astronomers have captured a direct image of a newly forming planet orbiting around a newly forming star.  It's a stunning photograph, not only for the science and what was observed, but what it means the future of exoplanetary 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 muc...

April Part II.

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

Damien Phillips, John Wildridge and Dustin Ruoff produce.

This month what else can we chat about? Paul and Jeni talk Artemis II. In this chatty news episode we chat about more Artemis mission shenanigans.

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...

Taking nothing for granted.

Hosted by Steve Nerlich.

Dear Cheap Astronomy – Is space really empty?

Well, the universe is filled with stars, planets and galaxies, but sure all the big gaps between those things are mostly empty. Although, let's not forget dark matter. It's likely to have a wider and denser distribution than visible matter, since we think there's four times more of it than there is of light matter - but all we can really say is 'we think' since we can't see dark matter and we don't actually know what it is...

https://www.youtube.com/watch?v=Wa1p6AOfQBc

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Apr 20, 2026.

Last week we talked about samples from other worlds delivered to Earth by meteorites. But sometimes you've gotta do the job yourself. Visit the far off place and bring the samples home. And today we're gonna talk about China's Chang'e sample return program. How they've delivered rocks from different parts of the Moon, and how this sets the stage for their upcoming human lunar missions. 

Th...

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 2025.

Today's 2 topics:

- Dr. Uisdean Nicholson from Heriot-Watt University and his team of 9 co-authors analyze 3D seismic imaging and drill cuttings from a 1980s oil well to make a convincing case that the Silverpit crater was produced by a the impact of a 1.5 football field diameter asteroid approximately 45 million years ago.

- In a recent 60 day period asteroid h...

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

In this episode, Jacinta chats with Dr. Simon de Wet about the discoveries he made during his Master's and PhD theses regarding mysterious gamma ray bursts (GRBs). Meanwhile, the team takes a trip back to the Pendulum Room for a final farewell to the old studio.

Gamma Ray Bursts are some of the brightest bursts of high energy light in space, usually originating from the collapse of a massive star or two neutron stars colliding. Both of these processes cr...

From April 22, 2026.

Season 4, episode 15.

This is EVSN's love letter to the Artemis II mission.

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!

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Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and Cos...

Hosted by Avivah Yamani, our Director.

What are constellations? Explore their history, science, and cultural meanings across civilizations, including how we see them from Indonesia.

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!

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Do go visit http://www.redbubble.com...

Hosted by Dr. Paul M. Sutter.

What did the Universe do to make so many defects? What happens when they get trapped? And could they be hiding right in front of our noses? 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, an...

https://www.youtube.com/watch?v=WGx1NvLO8FA

Hosted by: Fraser Cain ( @frasercain ) and Dr. Pamela L. Gay ( @CosmoQuest )

Streamed live April 17, 2026.

Even though humanity has returned samples from a fraction of the worlds in the solar system, the cosmos has delivered many more without us having to lift a finger. Meteorites. We have meteorites from the Moon, Vesta and even Mars! What have we learned about these rocks from other worlds? Space missions to other worlds cost millions to billions of dollars, and if we want to know exactly where space...

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 & November, 2025

Today's 2 topics:

- Scientists are using many approaches to understanding the nature and history of 3I/Atlas the third known interstellar traveler in the night. At a hyperbolic velocity of 130,000 mph it is the fastest interstellar visitor ever measured.

- On a recent clear night my Catalina Sky Survey teammate Hannes Groller was asteroid hunting with the S...

Episode 531.

Just a reminder for people to write in with their questions for David Nagler.

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com

Some binocular astronomy targets:

- M40 - 9.6 Magnitude 1.7'

This is a pair of faint stars located in Ursa Major. They are a tough find in binoculars, and you will be challenged to split them with binoculars. In telescopes, they appear to be an identical...

From Wednesday, April 15, 2026.

This week, in the first of our new shorter and more frequent episodes, we are going to take a look at the interplay of plate tectonics, geology, climate, and life. Specifically, we're looking at the interplay between super volcanoes and us! Did you know Naples is on a supervolcano? Also, in this episode: human sperm get lost in space.

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...

https://www.youtube.com/watch?v=dmtCX-TBgfE

The Plans For a Mars Sample Return Mission.

Hosted by Fraser Cain.

From Aug 28, 2019.

One of the great accomplishments of the Apollo missions was to bring home hundreds of kilograms of lunar rock. Suddenly, geologists had a lifetime's worth of lunar samples captured from several different spots across the Moon. These rocks and dust have been under continuous analysis since the Apollo 11 astronauts came home over 50 years ago.

And they're still making discoveries.

Scientists have samples of the S...

Cheap Astronomy investigates why light moves at light speed in a vacuum.

Hosted by Steve Nerlich.

Shining a light!

Dear Cheap Astronomy – Why does a photon travel at speed c, part1

It may sound a bit strange to ask why light travels at the speed of light, but that's because c isn't really the speed of light – it's really a measure of the relationship between distance (or space) and time. It's become customary to call c the speed of light, but in reality light moves at different and slower speeds through air...

https://www.youtube.com/watch?v=JBHzV4y7G5A

Hosted by Tony Darnell.

From May 23, 2025.

The COSMOS-Web dataset represents the deepest look into our universe done by #JWST.  

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!

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

From October 26, 2009.

Launching a rocket into space requires a big effort on the ground. Space agencies have built up huge infrastructures to store, prepare and launch rockets. Let's take a look at what's involved on the ground at a place like Cape Canaveral. What happens before, during and after a launch.

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!

...

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:

- The Lagrange point L4 is 60° ahead of Mars whereas L5 is 60° behind Mars on the red planet's orbital path about the Sun. An object placed at either of these locations is trapped gravitationally and is likely to remain there indefinitely. The Mars L4 and L5 locations could provide a permanent place for staging and resupply missions to Mars and wo...

Astronomers have discovered one of the most chemically primitive stars ever identified — an ancient stellar relic that preserves the chemical imprint of the very first stars in the Universe. In this podcast, Dr. Ani Chiti discusses the discovery of this ancient star and what it tells us about star formation in the early Universe. 

Bios: 

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

- Dr. Anirudh Chiti is a Brinson Prize Fellow at Stanford University, interested in the formation of the first stars...

From April 1, 2026. No foolin'!

Once again, we're going to attempt to get you up to date with what is going down at NASA. In addition to NASA updates, we have stories of science that comes in twos. From 2 planets forming in a disk to 2 stars coming together to shine brightly, to two asteroids that together orbit the Sun a bit faster, to two planets that collided, … it is a week for pairs.

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

Just visi...

https://spacescoop.org/en/scoops/2602/a-rule-breaking-supermassive-black-hole/

Astronomers have spotted a supermassive black hole, or SMBH, that is breaking all the rules! Well, one rule anyway. It's called eROSITA Final Equatorial Depth Survey, or eFEDS, J084222.9+001000. Whew! It is also called ID830, don't ask me why, so that's what I'll call it. Way easier!

Anyway…

Most galaxies have a supermassive black hole at their center. They grow by sucking down clouds of gas & dust nearby - like a powerful vacuum cleaner in space. As the black hole, uh, eats, the gas swirls inw...

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

Damien Phillips, John Wildridge and Dustin Ruoff produce.

This episode Paul and Jeni look at a possible gravitational wave solution to the Hubble tension, NASA's new nuclear deep space engine, Hubble telescope boosting, and more news on the destruction of British science. There is also our monthly skyguide to to get you looking up.

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 Dr. Paul M. Sutter.

What makes the interstellar comet 3I/Atlas so weird? Why are we finding so many interstellar visitors recently? How are they made, and where do they come from? 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=Me0MNCIuLs8

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Mar 30, 2026.

A star like the Sun only lasts about 10 billion years and it becomes a red giant and finally a white dwarf. This is catastrophic for some of the planets, consumed by the expanding red giant star. But most survive. What happens next in the long, slow cooling to the background temperature of the Universe?

This show is supported through people like you on Patreon.com/AstronomyCast 

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:

- The planets, millions of asteroids, tens of thousands of comets, distant icy worlds, and countless other bits and pieces of material orbit the Sun. A group of such co-orbiting objects is called the Taurid complex or swarm. It consists of Comet 2P/Enke, a number of near Earth asteroids, and the meteor stream which produces the Taurid meteor shower...

Hosted by Avivah Yamani, our Director.

What's up in the equatorial sky this month? April 2026 brings a spectacular alignment of Mercury, Mars, and Saturn, forming a tight celestial triangle just before sunrise. We also track the journey of the 'Evening Star' Venus as it meets the Seven Sisters, and prepare for the peak of the Lyrid meteor shower under dark, moonless skies. Plus, don't miss the rare occultation of asteroid Strenua, a must-see event for observers in Java, Sumatra, and beyond.

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

From Wednesday, March 25, 2026.

In this special episode, funded by the National Science Foundation, we're taking a break from the headlines to share the background story of comets. Today, we'll focus on the origin of comets and their basic anatomy, and in future episodes, we'll dive deep into how comets are discovered, what we can learn from them, and how they can literally and figuratively impact our world.

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...

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com

This month in episode 528 we talk about 3 Comets, two of which may end up being very bright. We also touch on some colorful double and carbon stars. There are many spring spirals we help listeners find as well as the Lyrid Meteor shower. This month the Moon pairs with Spica, Antares and the planets and at mid-Month a very young moon is visible for some listeners.

https://www.youtube.com/watch?v=FCqU0nz6iFU

Hosted by Fraser Cain.

From May 21, 2019.

On Monday, May 13, 2019, NASA declared: "We are going to the Moon to stay" by 2024. It's an exciting announcement; the return to a place humans haven't set foot on in more than 45 years. A serious goal that will test the ability of technology and engineering, as well as the bravery of the men and women who will carry out this task.

But we've also heard announcements like this before, many times. How will the mission c...

Today's guest: Dr. Richard Tresch Fienberg, astronomer and science communicator, recently served as the Expert Astronomer for Sky & Telescope's September 2025 Astronomy Tour. In our interview, we explore "Galileo's Italy" with him. Though enjoying retirement, he volunteers his time for the American Astronomical Society as Senior Advisor to the CEO, and is a Senior Contributing Editor with Sky & Telescope. This is the second of two episodes covering our interview.

H'ad astra historia is the official podcast for the Historical Astronomy Division (https://had.aas.org/) of the American Astronomical Society. We're here to share stories from a...

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

Hosted by: Fraser Cain ( @frasercain ) and Dr. Pamela L. Gay ( @CosmoQuest )

Streamed live on Mar 23, 2026.

The theory of evolution how life takes on its wildly different forms. But how did life get started in the first place? It appears the Universe has been making life's molecules in space for billions of years, setting up the conditions for life… everywhere? One of humanity's fundamental questions is "where does life come from." We can't answer that question, but we can tell you where some of the stuff of li...

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:

- Dr. Bill Cooke of NASA's Meteoroid Environment Office reports that on June 26, 2025 shortly after noon a beachball sized meteoroid traveling at approximately 30,000 miles per hour broke up about 27 miles above the town of West Forrest, Georgia.

- Astronomers have discovered some 1.4 million asteroids. Approximately 35,000 of these space rocks come near Earth. Less than 40 of them a...

From March 18, 2026.

This episode went through a lot of rewrites as breaking news kept breaking our hearts. Artemis is still on, but there are delays and cancellations. Before we face that, let's look at some pretty pictures and remember the universe is pretty even when our Earthly-timeline is not.

JWST Wolf-Rayet stars pix: 

https://science.nasa.gov/asset/webb/wolf-rayet-apep-miri-image/

Exposed Cranium Nebula:

https://science.nasa.gov/asset/webb/exposed-cranium-nebula-nircam-and-miri-images/

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

Hosted and sponsored by Andy Poniros.

Veteran of more than 590 days in space on Shuttle, Soyuz, & ISS missions NASA Astronaut, Don Pettit. Don discusses his space missions, the upcoming Artemis II mission, as well as his amazing inventions & photography from space. 

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! 

Ever...

Hosted by Steve Nerlich.

Bringing it home. Cheap Astronomy digs in to asteroid mining.

Dear Cheap Astronomy – Are rubble pile asteroids easier to mine?

Rubble pile asteroids are a collection of rocks that have accreted together under their mutual gravity, but the object they form isn't massive enough for gravity to compress it into one unified object. Instead, the rocks that gather together remain as individual rocks. So, from a mining perspective there's an advantage in that you can just pick up those individual rocks without needing drilling or explosives. 

De...

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

Damien Phillips, John Wildridge and Dustin Ruoff produce.

Our chatty astrowaffle episode this month (March Part 2) is all about the Artemis re-jig and what the future now holds for the program. Oh, and an update on Jeni's drains.

Cafuego's Jellyfish:

https://app.astrobin.com/u/cafuego?i=zdl9yu

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 muc...

https://www.youtube.com/watch?v=jY1_q9a0UFc

Hosted by: Fraser Cain ( @frasercain ) and Dr. Pamela L. Gay ( @CosmoQuest )

Streamed live on Mar 16, 2026.

Main sequence stars spend most of their time being… normal. Fusing hydrogen into helium in their cores. Producing radiation. But as their stockpiles of hydrogen run out they switch to other fuels, starting to climb the ladder of the periodic table of elements. And this is when things get weird. As we get more and more observations of the cosmos, our understanding gets more detailed. In this episode we...