Astronomy Cast Ep. 779: Milankovitch Cycles
The 365 Days of Astronomy
Streamed live on Jan 12, 2026. Hosted by: Fraser Cain ( ) and Dr. Pamela L. Gay ( ) Humans live short lives, and from our perspective the seasons are something that come and go with perfect regularity. But astronomers know the terrible truth! And that there are cycles that slowly shift over tens of thousands of years, shifting the cycles and the Earth’s climate. Today we’ll talk about the Milankovich Cycles! The Earth's orbit, tilt, and other physical attributes aren't quite as constant as you might think! Come learn how long-term changes do and don't affect our climate. This show...
info_outline
Travelers in the Night Eps. 847 & 848: Ultra Distant Comet & C.2024 E1 (Wierzchos)
The 365 Days of Astronomy
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. From May 2025. Today's 2 topics: - My Catalina Sky Survey teammate Hannes Gröller was asteroid hunting in the constellation of Ursa Major with the University of Arizona 90 inch Bok telescope on Kitt Peak when he discovered a faint moving object surrounded by a tiny gas and dust cloud called a coma. May 19, 2028 comet C/2025 D1 (Groeller) reaches its closest point to the Sun some 14.1 times the Earth-Sun distance and...
info_outline
ASTROMAN - Lunar Eclipse
The 365 Days of Astronomy
Dive into the wonders of the lunar eclipse! ASTROMAN breaks down the 2026 total "Blood Moon" in Asia, offering tips for skywatchers and the science behind the shadow. “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...
info_outline
EVSN - Astronomy Answers: What’s That Light?
The 365 Days of Astronomy
From January 7, 2026. In this episode, we’re pleased to say we get to focus on science, as we bring you hot Jupiters, a tear-drop shaped Jupiter massed… something…? - and news of objects getting torn apart and other objects getting merged together as our universe lights up our night. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: 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!...
info_outline
Actual Astronomy - OzSky With Clint Reading
The 365 Days of Astronomy
Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. In this podcast (Episode 519) we talk with a special guest & long-time listener Clint Reading (from Nebraska, formerly from Idaho) about his astro-tourism trips to OzSky which is a biannual event for amateur astronomers from the northern hemisphere to have the opportunity to see the southern skies. We learn how to prepare for an astronomy trip to Australia, what to bring to get the most out of a week under the southern stars and how you can take advantage of these events. This is part of our New Years...
info_outline
Cheap Astronomy - Dear CA Ep. 127: Mystery Physics
The 365 Days of Astronomy
Hosted by Steve Nerlich. Well… Cheap Astronomy confirms some mysteries are still mysteries! Dear Cheap Astronomy – Is warp drive looking any more possible? Well, no, insofar as it looks about as possible as it ever did, which is to say, it's probably impossible, but at the same time, it's best to never say never. As we've covered before, the nature of space-time precludes the possibility of faster than light travel simply because light travels as fast as it is possible to travel in space-time. Dear Cheap Astronomy – What is X-17? X-17 is a mysterious and somewhat hypothetical...
info_outline
Deep Astronomy - Discoveries of the Webb Space Telescope: Webb's First Deep Field
The 365 Days of Astronomy
Hosted by Tony Darnell. From Feb 13, 2025. The deep fields taken by the Hubble Space Telescope are now legendary. Astronomers used the most complicate and expensive instrument ever put into space to stare at nothing, a very risky move, but one that paid off. What happened when we did the same thing with the James Webb Space Telescope? We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them...
info_outline
Astronomy Cast Ep. 778: Dyson Swarms
The 365 Days of Astronomy
Hosted by: Fraser Cain ( ) and Dr. Pamela L. Gay ( ) Streamed live on Jan 5, 2026. Freeman Dyson asked a fascinating question. What would it look like if a civilization was using all the energy coming from their star? And what form would this take? This introduced the concept of a Dyson Sphere, or more realistically, a Dyson Swarm surrounding a star. But if you’re skeptical about the concept, you’re in good company. This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael...
info_outline
Travelers in the Night Eps. 845 & 846: Mighty Schmidt & Bright Nights
The 365 Days of Astronomy
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. From April 2025. Today's 2 topics: - On a single February night my Catalina Sky Survey teammate Jacqui Fazekas reported the discovery of 5 Earth approaching objects using our small but mighty Schmidt telescope on Mt. Bigelow, Arizona.Rest assured that on any given night there are asteroid hunters on the look out for seriously dangerous space rocks. - One little known and infrequently observed phenomenon in the natural...
info_outline
NOIR Lab - Fast Spinning Asteroids From the Rubin Observatory
The 365 Days of Astronomy
As part of the NSF–DOE Vera C. Rubin Observatory First Look event in June 2025, Rubin announced that it had observed thousands of asteroids cruising about our Solar System, about 1,900 of which have been confirmed as never-before-seen. Within the flurry, a team of astronomers has discovered 19 super- and ultra-fast-rotating asteroids. One of these is the fastest-spinning asteroid larger than 500 meters (0.3 miles) ever found. In this podcast, Dr. Sarah Greenstreet discusses these fast spinning asteroids and what makes the Rubin Observatory ideal for discovering these types of objects. ...
info_outlinehttps://www.youtube.com/watch?v=hGHhhcHF23Y
Streamed live on Oct 28, 2024.
Let's look at the Euclid Space Telescope.
Hosted by: Fraser Cain and Dr. Pamela L. Gay
The Euclid 208-Gigapixel image!
https://www.youtube.com/watch?v=86ZCsUfgLRQ
SUPPORTED BY YOU!
This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be listed in our YouTube videos.
Thanks to: Andrew Poelstra, BogieNet, Brian Cagle, David, David Truog, Ed, Gerhard Schwarzer, Jeanette Wink, Siggi Kemmler, Stephen Veit
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.