The 365 Days of Astronomy

Latest Episodes:

Travelers in the Night Eps. 877 & 878: Close Grazer & Comet Fragment May 03, 2026

Show notes

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 & December 2025.

Today's 2 topics:

- On a busy night of asteroid hunting with the 90 inch, University of Arizona's Steward Observatory Bok telescope on Kitt Peak in Arizona, my Catalina Sky Survey teammate Vivian Carvajal discovered 13 new Earth approaching objects. One of them now known as 2025 TF immediately got her attention as it streaked through the constellation of Pegasus. Another space rock 2020 VT4 came about 30 miles closer to the surface of our home planet giving 2025 TF second place as a grazing non impactor.

- My Catalina Sky Survey teammate Vivian Carvajal was asteroid hunting in the constellation of Eridanus with the 90 inch, University of Arizona's Bok telescope on Kitt Peak when she was treated to an amazing sight. Comet COMET 240P/NEAT with a small version of itself cruising along beside it.It is virtually impossible to predict if Vivian's fragment 240P-B will survive to make another approach to the Sun in 2033 or so.

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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Equatorial Sky Guide - May 2026 May 02, 2026

Show notes

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.

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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

EVSN - After Hours: Launching The Small(er) Things With Exolaunch CEO Robert Sproles May 01, 2026

Show notes

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 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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Guide To Space - First Ever Picture of a Baby Planet! Apr 30, 2026

Show notes

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 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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Awesome Astronomy - Artemis Chat Apr 29, 2026

Show notes

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 Patreon link to them too!

Every bit helps! Thank you!

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

Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Cheap Astronomy - Dear CA #134: Testing Asumptions Apr 28, 2026

Show notes

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.

Dear Cheap Astronomy – Just how strange is reality?

So, this is an unusual question insofar as the word strange implies a divergence from normal - whereas reality is by definition normal. Therefore, whatever strangeness it may possess is mostly defined by our own subjective expectations. Every day the Sun comes up and when we make a cup of tea, the water still boils the way that it has ever other day and the tea bags and milk you bought the day before haven't spontaneously dematerialized overnight. These are things we consider normal and indeed represents the apparent blandness of reality - something that can only be spiced up by the application of our imagination.

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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Astronomy Cast Ep. 791: Chang'e Sample Return Apr 27, 2026

Show notes

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.

The Chinese space program is step by step testing the technologies necessary for humanity to return to the surface of the Moon. From orbiting comms satellites, to landing sample return missions, the Chang`e missions are exploring new places in new ways. In today's episode, we discuss the Chang`e 6 sample return.

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

In this episode, we'd like to thank: Andrew Poelstra, Burry Gowen, David, David Rossetter, Ed, Eric Lee, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Joe McTee, Michael Purcell, Sergey Manouilov, Siggi Kemmler

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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Travelers in the Night Eps. 875 & 876: Newly Discovered Crater & Neighborhood Traffic Apr 26, 2026

Show notes

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 hunters tracked 24 space rocks which came closer than our Moon. My team the University of Arizona's Catalina Sky Survey operates 5 telescopes in the mountains around Tucson, Arizona. Our goal is to find objects like 2025 RM1 which are on an impact trajectory with our home planet in advance so that people in the effected area can be warned to stay away from doors and windows.

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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

The Cosmic Savannah - Ep. 81: One Last Burst: Gamma Rays & Afterglows Apr 25, 2026

Show notes

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 create a black hole, which ejects very bright light into space. GRBs happen frequently, but far away from us!

Simon has begun his post-doc in Copenhagen where he will continue working on transient astronomy. Transient astronomy involves studying objects that vary in their nature. Simon talks us through the accidental discovery of GRBs, how we discovered that GRBs are from very distant galaxies. He also mentions that GRBs originate from collapsing stars as well as the formation of a black hole.

Simon's PhD work focused on trying to capture the optical afterglow of GRBs using the MeerLICHT telescope in Sutherland. He found that the light curves of the optical afterglows observed did not behave as expected. Simon used radio data from MeerKAT, ALMA in Chile, ATCA in Australia and GMRT in India where radio afterglows were observed.

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 http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

EVSN - To Artemis, With Love Apr 24, 2026

Show notes

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!

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

Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

Thank you! (Haven't donated? It's not too late! Just click!)

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

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

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