The 365 Days of Astronomy

From June 24, 2026.
In this episode we look at the hidden and unexpected geology that may lurk beneath East Antarctica's ice sheet, evidence of past worlds and lost moons that may once have populated our solar system, and evidence of a past Supernova that today may be showering the Earth with material.
 
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.

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
Patreon thanks go out to Justin Y.
Also thanks for all the kind comments on the David Nagler Episode.
[Rich] I'm sorry, but the lads didn't give me a detailed list of sky treats to put here in the show notes. Maybe next time. I share those with my astronomy club members & they really appreciate it!
 
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.

Today's 'guest' is HAD's This Month in Astronomical History.  I'll be reading more essays from the archives: Emily McMahon's November 2020 essay titled, "Sedna: In the Depths of the Solar System", and Dr. Ken Rumstay's November 2022 essay titled, "Lunokhod 1 - The First Extraterrestrial Rover". Please note that Emily was a high school student when she wrote her essay, so you don't have to be an astronomer or astrophysicist to write for TMIAH.
 
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 lived it, who were "in the room" during pivotal events within the last 50 years or so.  
 
Podcast theme music: "Frost Waltz" Kevin MacLeod (incompetech.com), licensed under creative commons: by attribution 4.0 license (http://creativecommons.org/licenses/by/4.0/) 
 
Loretta Cannon (an AAS affiliate via Rose City Astronomers) is a science-and-word-nerd who really likes outer space and the people who study it. She quite enjoys working as HAD's podcaster, sharing astronomy stories to you.
 
This Month in Astronomical History:  
https://had.aas.org/resources/astro-history
 
Dr. Mugdha Polimera:  
https://www.mugdhapolimera.com/
 
Sedna: In the Depths of the Solar System  
TMIAH  Nov 2020  "Sedna: In the Depths of the Solar System":  
https://aas.org/posts/news/2020/11/month-astronomical-history-november-2020
 
Emily McMahon:  
https://www.linkedin.com/in/emilykmcmahon/ 
https://aas242-aas.ipostersessions.com/Default.aspx?s=88-6D-5F-F3-FF-2E-D2-CD-AA-94-0C-FA-DE-FF-11-5E
 
Sedna (2003 VB12):  
https://en.wikipedia.org/wiki/Sedna_(dwarf_planet)
Sedna (Inuit legend):  
https://en.wikipedia.org/wiki/Sedna_(mythology)
 
Kuiper Belt:  
https://science.nasa.gov/solar-system/kuiper-belt/
 
Oort Cloud:  
https://science.nasa.gov/solar-system/oort-cloud/
 
Palomar Observatory:  
https://sites.astro.caltech.edu/palomar/homepage.html
https://sites.astro.caltech.edu/palomar/about/chronology.html
 
Mike Brown (CalTech):  
https://mikebrown.caltech.edu/
 
Chad Trujillo (NAU, Gemini):  
https://directory.nau.edu/person/cat382
https://www.sciencefriday.com/person/chad-trujillo/
 
David Rabinowitz (Yale):  
https://en.wikipedia.org/wiki/David_L._Rabinowitz
https://physics.yale.edu/people/david-rabinowitz
 
Samuel Oschin 48" Schmidt Telescope: 
https://sites.astro.caltech.edu/palomar/about/telescopes/oschin.html
 
Quasar Equatorial Survey Team (QUEST) Camera:  
https://www.astro.yale.edu/mschwamb/Quest_La_Silla_KBO_Survey/Telescope_and_Camera.html
 
SkyMorph program:  
https://ui.adsabs.harvard.edu/abs/1998BAAS...30.1036L/abstract
 
Palomar Sky Survey:  
https://voyages.sdss.org/expeditions/expedition-to-galaxies/sky-surveys/the-palomar-sky-survey/
 
Gemini Telescope:  
https://www.gemini.edu/
 
Keck Observatory:  
https://keckobservatory.org/
 
Hubble Space Telescope:  
https://science.nasa.gov/mission/hubble/
NASAs's Dwarf Planets (including Pluto, Eris):  
https://science.nasa.gov/dwarf-planets/
 
Mike Brown's paper describing Sedna's discovery:  
https://web.gps.caltech.edu/~mbrown/sedna/#planets
 
Sedna webpage (by Mike Brown):  
https://web.gps.caltech.edu/~mbrown/sedna/#planets
 
animation of Sedna's orbit by Robert Hurt (Spitzer Sci Ctr):  
https://www.spitzer.caltech.edu/video/ssc2004-05v1-orbit-of-sedna
 
2012 VP113 'Biden':  
https://en.wikipedia.org/wiki/2012_VP113
 
2015 TG387 'The Goblin':  
https://en.wikipedia.org/wiki/541132_Lele%C4%81k%C5%ABhonua
https://www.npr.org/2018/10/02/653453443/a-small-planet-with-big-implications
 
Lunokhod 1 – The First Extraterrestrial Rover
TMIAH  Nov 2022  "Lunokhod 1 – The First Extraterrestrial Rover":  
https://aas.org/posts/news/2022/11/month-astronomical-history-november-2022
 
Prof Kenneth Rumstay:  
https://www.valdosta.edu/about/news/releases/2017/09/dr.-kenneth-rumstay-honored-with-presidential-excellence-award-for-teaching.php
https://meritpages.com/KennethRumstay
 
HAD News:  
https://had.aas.org/news/had_news
 
Mars Curiosity rover:  
https://science.nasa.gov/mission/msl-curiosity/
 
Soviet Union:  
https://en.wikipedia.org/wiki/Soviet_Union
 
Soviet N1 rocket:  
https://en.wikipedia.org/wiki/N1_(rocket)
 
NASA's Apollo program:  
https://www.nasa.gov/the-apollo-program/
 
Lunokhod ('moonwalker') 1:  
https://en.wikipedia.org/wiki/Lunokhod_1
 
Baikonur Cosmodrome:  
https://en.wikipedia.org/wiki/Baikonur_Cosmodrome
 
Lunar Reconnaissance Orbiter:  
https://science.nasa.gov/mission/lro/
    
Sky and Telescope magazine:  
https://skyandtelescope.org
 
NPR article on Lunokhod 2 rover (discusses Garriott's purchase):  
https://www.npr.org/2010/03/20/124956591/lunar-rover-is-spotted-for-first-time-in-37-years
 
China's Yutu rovers:  
https://en.wikipedia.org/wiki/Yutu_(rover)
https://www.planetary.org/space-missions/change-4
 
Sputnik I:  
https://en.wikipedia.org/wiki/Sputnik_1
 
Artemis Program:  
https://www.nasa.gov/humans-in-space/artemis/
 
A Little Bit of Trivia – NASA mission patches
Artemis Program:  
https://www.nasa.gov/humans-in-space/artemis/
 
Artemis I:  
https://www.nasa.gov/mission/artemis-i/
 
Marvel's Agents of S.H.I.E.L.D., season 3:  
https://en.wikipedia.org/wiki/Agents_of_S.H.I.E.L.D._season_3
 
Mission patch:  
https://en.wikipedia.org/wiki/Mission_patch
https://www.nasa.gov/gallery/human-spaceflight-mission-patches/
 
Loretta Cannon's LinkedIn page (for transcripts' pdf files):  
https://www.linkedin.com/in/lorettajcannon-neptuneedit/
 
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.

Things aren't always straight-forward.
Hosted by Steve Nerlich.
Dear Cheap Astronomy – What's all the current fuss about dark energy?
Some preliminary data from the Dark Energy Spectroscopic Instrument, also known as DESI has resulted in a swath of popular science articles claiming dark energy is diminishing. 
Well…
It's worth starting by saying that many of the core project team have stressed it's just the first data release – there'll be at least four more, so everyone should probably just chill a bit until more data is available.
 
Dear Cheap Astronomy – Why do eclipse paths run in different directions?
Yes folks, it's that rare event when we actually answer an astronomy question. So, solar eclipses. As you know, the Earth's rotation makes the Sun appear to cross the Earth's daytime sky following a line we call the ecliptic. And yep, that's no coincidence, but we'll get to that. The ecliptic is not a fixed path because of the Earth's tilted axis of rotation. So as the Earth progresses in its orbit around the Sun, from the Earth's surface at the equinoxes, the Sun appears to be overhead at the equator, but for the rest of the year it's either shifting north towards the Tropic of Cancer or south towards the Tropic of Capricorn.
 
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.

https://www.youtube.com/watch?v=aDgA3eiUANs
Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)
Streamed live June  22, 2026.
The Saturn 5 was a monster, capable of sending humans and a lander to the Moon and bringing them back again. But the number of heavy lift rockets since then has gotten pretty sparse. Now, with tens if not hundreds of thousands of satellites in the works, giant new space telescopes and multi-ton lunar landers in development there are heavy lift solutions to match. So let's talk about them! From yesterday's Saturn V to today's Ariane VI, rockets capable of launching large telescopes or small space stations in a single go are modern marvels. They are also wildly dangerous, and not exactly compatible. Let's look at today's fleet of rockets and just what they're accomplishing. 
 
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.