The weekly podcast of the International Year of Astronomy 2009. Every week's episodes from the 365 Days of Astronomy Podcast, compiled into one omnibus edition.
All content for 365 Days of Astronomy - Weekly Edition is the property of Fraser Cain & Dr. Pamela L. Gay and is served directly from their servers
with no modification, redirects, or rehosting. The podcast is not affiliated with or endorsed by Podjoint in any way.
The weekly podcast of the International Year of Astronomy 2009. Every week's episodes from the 365 Days of Astronomy Podcast, compiled into one omnibus edition.
Streamed live on Dec 15, 2025. Atomic hydrogen is the raw material for stars, but there’s a problem. It’s cold & dark, but it can do a very rare trick, releasing a photon in a very specific wavelength, known as the 21 centimeter line. And thanks to this wavelength astronomers have mapped out star forming regions across the Milky Way, the Universe and into the Dark Ages! This forbidden transition of Hydrogen has led to the mapping of galaxy rotation, a cool classroom application of quantum mechanics, and weirdly no Nobel prize. In this episode, Fraser and Pamela take a look at this line's out-of-proportion awesomeness! 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
365 Days of Astronomy - Weekly Edition
The weekly podcast of the International Year of Astronomy 2009. Every week's episodes from the 365 Days of Astronomy Podcast, compiled into one omnibus edition.
