Walkabout the Galaxy

Scientists have been chasing methane on Mars for years. It's a slippery little molecule that doesn't stick around very long and has several biological (as well as non-biological) sources. The armada of spacecraft at Mars have conflicting measurements of the presence or absence of methane in Mars' atmosphere. Fortunately the astroquarks are here to make sense (or fun) of it. Plus, we discuss a cool new way to figure out the rate of expansion of the universe, and bonus methane trivia!

Direct download: Is_Mars_Farting_or_Burping_.mp3
Category:Science -- posted at: 9:39pm EDT

We discuss the dramatic first view of a black hole in a special episode recorded in front of a live audience. In addition to the Event Horizon Telescope's image, bonus nerd trivia, and an abundance of space news, we review the latest in space impacts, including the dramatic fossil field in North Dakota revealing the death and mayhem just minutes after the catastrophic asteroid impact that wiped out nearly all life on Earth 65 million years ago.

Direct download: I_Can_See_Your_Black_Hole_From_Here.mp3
Category:Science -- posted at: 9:31am EDT

Just when you thought Dark Energy couldn't get any stranger, new measurements of the history of the expansion of the universe show an era well after the big bang and inflation but long, long ago when the rate of expansion was different than today. We are running out of dark names for the unknown. Closer to home the astroquarks discuss evidence for rain and water on Mars at a surprisingly recent (well, still a long time ago) epoch. All that plus space news and nerd trivia can be found on this episode of Walkabout the Galaxy.

Direct download: There_are_Dark_Forces_at_Work_in_the_Universe.mp3
Category:Science -- posted at: 11:22am EDT

1