AaS! 73: Why should we believe the big bang?
What did Hubble really discover? Why does redshift imply an expanding universe? Why is the night sky dark? Why is there so much hydrogen, and how is that connected to the Big Bang? I discuss these questions and more in today\u2019s Ask a Spaceman!
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Big thanks to my top\xa0Patreon\xa0supporters this month: Robert R., Justin G., Matthew K., Kevin O., Justin R., Chris C., Helge B., Tim R., SkyDiving Storm Trooper, Steve P., Lars H., Khaled T., John F., Mark R., and David B.!
Music by Jason Grady and Nick Bain. Thanks to\xa0WCBE Radio\xa0for hosting the recording session,\xa0Greg Mobius\xa0for producing, and\xa0Cathy Rinella\xa0for editing.
Hosted by Paul M. Sutter, astrophysicist at The Ohio State University, Chief Scientist at COSI Science Center, and the one and only Agent to the Stars (http://www.pmsutter.com).