Astronomy Cast Ep. 682: Ultra-Diffuse Galaxies & Dark Matter
Release Date: 05/22/2023
The 365 Days of Astronomy
From Thursday, April 25, 2024. As scientists discover and explore the atmospheres of more and more planets orbiting stars other than our Sun, we are learning that if you can imagine it, it probably exists. In a new paper discussing the planet WASP-76b, researchers describe what appears to be a giant iron glory in the atmosphere of another world: a circular rainbow, and it's not caused by refracted starlight! 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...
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info_outlinehttps://www.youtube.com/watch?v=ta9lH755xw0
Streamed live on May 15, 2023.
Astronomers first noticed the strange behaviors of rotating galaxies almost 100 years ago, suggesting there’s an invisible dark matter hold them together with gravity. Or maybe we just don’t understand how gravity works at the largest scales. Observations are much better now, and astronomers have found examples of galaxies that are almost entirely made of dark matter. Does this tell us anything?
This video was made possible by the following Patreon members:
Burry Gowen
Stephen Veit
Jordan Young
Venkatesh Chary
Andrew Poelstra
Brian Cagle
David Truog
Jeanette Wink
Gerhard Schwarzer
David
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: 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!
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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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