From December 3, 2025.

The world we live on today has undergone dramatic change since it first formed, and time hasn't necessarily been kind. Earth has gained some weight (and a Moon) after a chance collision. A leaky gut led to some confusing internal structures. Here on the surface, mountains keep finding new ways to pop off and destroy surroundings. But scientists are helping us understand all these factors. Learn how in this episode of EVSN, and also hear about our latest tales from the launch pad.

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

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https://www.youtube.com/watch?v=CtVKAQMNjY4

Hosted by Fraser Cain & Tim Dodd.

From Feb 27, 2018.

NASA is going to decide between a comet sample return mission or a helicopter on Titan. Which mission should it be?

[Spoiler alert! NASA went with the Dragonfly mission.]

Tim's video:

https://www.youtube.com/watch?v=JkS2dP7eiEU

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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 [email protected].

Hosted by Steve Nerlich.

Immortality is hard work.

Episode 6a: Staying Switched On

It's difficult to achieve immortality unless you also achieve invulnerability, since even if you don't age or

get sick you can still die from a natural disaster, or a murder, or whatever. Indeed, the longer you live

the more likely some unexpected calamity may come your way. So, if your only immortal up until the

point that something goes wrong and you die, then you're not really immortal.

Episode 6b: Hopping Universes.

The day is coming when our Universe starts winding down towards heat death and our by-then close-to-

immortal descendants will need to find a fresh young Universe to continue in. After all, here we living in

a Universe that apparently popped of nowhere, quite literally, since the whole idea of a Universe is that

it contains spacetime, so whatever nothingness that it did pop out of had neither space nor time

dimensions.

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https://www.youtube.com/watch?v=nUyT46ZQYsc

Hosted by Tony Darnell.

From Feb 6, 2025.

JWST Discovers Planet Formation in the Conditions of the Early Universe!

Journey with the James Webb Space Telescope to the star cluster NGC 346, a vibrant region of star birth and potential planet formation. This image offers a glimpse into the early universe, where stars formed under conditions very different from our own Milky Way.

See how JWST's infrared vision reveals protoplanetary disks - swirling clouds of gas and dust around young stars - defying previous models of planet formation. Witness the evidence that planets can form in environments with fewer heavy elements than previously thought, expanding our understanding of how planetary systems like our own come to be.

This stunning image, a mosaic of data collected by JWST's NIRCam instrument, represents a breakthrough in our understanding of the cosmos. Discover the potential for new worlds and the endless possibilities that await as we continue to explore the universe.

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

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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 this episode, we consider the case for letting potentially impossible things make it to publication.

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

In this episode, we'd like to thank: Andrew Poelstra, BogieNet, Brian Cagle, Burry Gowen, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Michael Purcell, Sergey Manouilov, Siggi Kemmler, Sérgio Sancevero

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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 [email protected].

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 water inside of them.

- When the Japanese spacecraft Hayabusa visited the near Earth asteroid Itokawa in 2005 it found this 2000 foot by 800 foot elliptical world to have a variety of surface features. Instead of being a solid object like some asteroids, Itokawa is a rubble pile of boulders and pebbles held together by its tiny gravity. The total volume of pebbles seems to be comparable to the volume of large rocks and boulders which make up Itokawa , however, the depths of the pebbles or their concentration in the center remains unknown. Given this uncertainty, this asteroid appears to be made up of a million times more small particles than larger ones.

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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 [email protected].

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!

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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 [email protected].

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.

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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 [email protected].

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. [email protected]

- 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 protoplanet, located between Mars and Jupiter. It is composed of a high concentration of nickel and iron and is estimated to be worth an astronomical amount of metal. Scientists are studying it to learn more about the formation of Earth's core and other rocky planets, and a NASA mission is currently underway to explore it.

- Dec 10 – Moon Occults Regulus 2am

- Dec 13 – Geminid Meteor Shower – up to 150 ZHR on morning of the 14th.

- Dec 21 – Ursid meteor Shower – 10 zhr

- Dec 22 Moon Occults Pluto at 4pm EST

- Dec 23 Carbon Star Z Psc best tonight

- Dec 24 Comet 24P Schaumasse visible tonight

Marie called it again…we have yet another bright comet…8.5 magnitude by mid month, moon leaves sky on 11/12th

- Dec 25 Saturn Ring Tilt -0.76

- Dec 26 – Lunar X near crater Werner visible

- Dec 27 — Saturn, Neptune and Moon congregate in evening sky.

Lunar Straight Wall visible

- Dec 29 – Jeweled Handle Visible On Moon

- Dec 31 – Moon 0.9° N of Pleiades

Carbon Star T Lyn best tonight

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

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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!

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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 [email protected].