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Ask A Spaceman Ep. 181: What Is The Principle Of Least Action?

Release Date: 08/02/2022

Exoplanet Radio - JWST Measures Temperature of TRAPPIST-1b

The 365 Days of Astronomy

Publication date 2023-07-12. The James Webb Space Telescope has made its first observations of the TRAPPIST-1 system and measured the temperature of TRAPPIST-1b! 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! ------------------------------------ Do go visit for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! This show is made possible...

Astronomy Cast Ep. 699: Holiday Gift Giving Ideas for Astronomy and Space Fans

The 365 Days of Astronomy

Streamed live on Nov 20, 2023. Just a warning, the holidays are rapidly approaching. It’s time, once again, to think about what to buy all the space nerds on your lists. Here’s what we like. This video was made possible by the following Patreon members: Jordan Young Stephen Veit Jeanette Wink Siggi Kemmler Andrew Poelstra Ed BogieNet Brian Cagle David Truog Gerhard Schwarzer David Nicholas Cunningham THANK YOU! - Fraser and Dr. Pamela 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...

Travelers in the Night Eps. 217E & 218E: Close Duo & Close or Not

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. Today's 2 topics: - On consecutive nights my Catalina Sky Survey teammate Richard Kowalski discovered two very close approaching asteroids. One of Richard's discoveries, 2016 BY14 must be made out of pretty tough stuff since when it was closest to the Sun it received more than twice the solar energy which heats the surface of Mercury to 800 F. Asteroid hunter's continue to need to track 2016 BY14 to make sure that its orbit...

The Cosmic Savannah - Ep. 51: No Planet B

The 365 Days of Astronomy

Hosted by Dr. Jacinta Delhaize & Dr. Daniel Cunnama. We are joined by the co-founder of Professor Travis Rector who joins us via Zoom from Alaska! Travis is a Professor of Astronomy at the University of Alaska and is the Chair of the American Astronomical Society’s (AAS) , as well as the Chair of a task force aimed at reducing the carbon footprint of the AAS. Travis speaks with us about his efforts to teach climate change to students and why it is important for astronomers to do so. Travis shares some tips on how to communicate climate change science better and offers some...

EVSN - Once and Future Life on Venus, Earth, and Mars

The 365 Days of Astronomy

Each week, when we set off to do this show, we start with one core idea: We want to tell you what is new in space and astronomy… and remember Earth is a planet too. When we select stories, we try to find the ones we’re excited to talk about over coffee, or the ones we know we will be sharing randomly with strangers who make the mistake of asking, “What do astronomers do?” We are here, week after week, to inflict space on others, and we hope that when we do you will return the favor and inflict this show on others. (This episode was originally released on YouTube June 24, 2023.) ...

Awesome Astronomy - The Astronomy Mythology of Wales

The 365 Days of Astronomy

Paul Hill and Dr. Jenifer “Dr. Dust” Millard host. Damien Phillips, John Wildridge and Dustin Ruoff produce This month Jeni talks to Paul. No not our Paul. Paul Cornish, planetarium and science outreach extraordinaire at Bristol’s We the Curious. They chat about one of our favourite topics on Awesome, constellation Mythology and this time it has a very Welsh flavour...enjoy! Bio - Awesome Astronomy explores the frontiers of science, space and our evolving understanding of the universe. Join Paul & Jeni for informative and fun astronomy programmes...

Uni-Tea - Unveiling the Secrets of Gravity

The 365 Days of Astronomy

Podcaster names: Biruk Daniel and Fith Habtamu. In this captivating podcast episode, embark with us on a cosmic journey through the mysteries of gravity and the boundless cosmos. Join our hosts as we delve into the mind-boggling phenomena that shape our understanding of the Universe. Join us on this cosmic odyssey as we unravel the mysteries of gravity and the awe-inspiring wonders of the cosmos that continue to captivate scientists and stargazers alike. Prepare to have your mind expanded, your imagination ignited, and your sense of wonder rekindled as we embark on this enthralling...

Ask A Spaceman Ep. 212 - Where Do All The Elements Come From?

The 365 Days of Astronomy

What processes created all the elements? Why are some elements more common than others? How does fusion happen inside and outside of a star? I discuss these questions and more in today’s Ask a Spaceman! This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: All episodes: Follow on Twitter: Like on Facebook: Watch on YouTube: Read a book: Keep those questions about space, science, astronomy,...

Astronomy Cast Ep. 698: Insights Into the Universe

The 365 Days of Astronomy

From Nov 5, 2023. How the time flies. It’s been over a year since JWST went operational, with other missions joining the fun. What new insights have we gained about the Universe thanks to these powerful new tools? Recorded live during the 2023 Hangout-a-Thon on November 5. This video was made possible by the following Patreon members: Jordan Young Stephen Veit Jeanette Wink Siggi Kemmler Andrew Poelstra Ed BogieNet Brian Cagle David Truog Gerhard Schwarzer David THANK YOU! - Fraser and Dr. Pamela We've added a new way to donate to 365 Days of Astronomy to support...

Travelers in the Night Eps. 215E & 216E: Planet 9 & Alien Contact

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. Today's 2 topics: - Astronomers are searching the solar system for new planets. Calculations based on the orbits of the distant objects out near Pluto suggest the existence of a 10 Earth mass planet twenty times farther from the Sun than the planet Neptune. At its great distance the hypothetical new "Planet 9" would take 20,000 years or so to make a single orbit about the Sun. The search for "Planet 9" has begun. Until we...

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What makes the principle of least action so important? Who came up with it? Is it all just a bunch of math or does it actually mean something? I discuss these questions and more in today’s Ask a Spaceman!

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Thanks to Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist and the one and only Agent to the Stars: http://www.pmsutter.com

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