306 episodes

An irreverent and informative tour of the latest, greatest, and most interesting discoveries in astronomy.

Walkabout the Galaxy Joshua Colwell, Adrienne Dove, and James Cooney

    • Science
    • 4.8 • 109 Ratings

An irreverent and informative tour of the latest, greatest, and most interesting discoveries in astronomy.

    Lunar Caves for Future Habitation

    Lunar Caves for Future Habitation

    In this light episode of Walkabout the Galaxy, Josh and Audrey discuss the first confirmation of open spaces in lava tubes connected to lunar pits on the Moon. 200 lunar pits have been observed on the Moon, and now scientists have used radar data to demonstrate that these pits are in fact connected to caverns that could provide future astronauts with a safe haven beneath the lunar surface. Join us on this short walkabout for the full story, trivia, and space news updates.

    • 25 min
    Dark Matter, Deuterons, and a Mixed-Up Protoplanetary Disk

    Dark Matter, Deuterons, and a Mixed-Up Protoplanetary Disk

    You'll be amazed at how much we can learn from iron meteorites. Who would have guessed that analysis of the compositions of these humble metallic remnants of asteroids would be able to tell us about the shape of the protoplanetary disk? We'll learn about the latest clues to the early history of our solar system, the surprising abundance of deuterons in cosmic rays provides another indicator that we still have a lot to learn about the early universe, and dark matter - well it's still out there, still dark. Join us for all this, space news, nerdy trivia and more.

    • 42 min
    Cygnus X-3 and a Naked-Eye Nova

    Cygnus X-3 and a Naked-Eye Nova

    The clock is ticking on T Coronae Borealis which seems primed to undergo a nova explosion this summer. That will make this otherwise faint star as bright as Polaris thanks to a burst of nuclear fusion reactions on the exposed surface of this white dwarf. Another curious binary system, Cygnus X-3, is beaming x-rays toward us thanks to some nifty photon processing in the disk surrounding this black hole. Learn more about these cool systems, parallel universes, dense moons and more with your friendly neighborhood astroquarks.
     

    • 41 min
    Primordial Black Holes Make the Galaxy Go 'Round

    Primordial Black Holes Make the Galaxy Go 'Round

    We take a look at some Beta Pic Disk shots before journeying back to the earliest era of the universe and the possible formation of primordial black holes. Some of these may have been only the size of an atom and would have long since evaporated through Hawking radiation. But they may have left an observable imprint for our powerful telescopes peering into the distant past, and their larger siblings are a possible contender for dark matter. Join us for all this, space news, silly trivia, and much more. 

    • 39 min
    Full Circle to the Origins of Carbon and Exotic Gravity

    Full Circle to the Origins of Carbon and Exotic Gravity

    The Astroquarks celebrate their 360th episode with discoveries showing carbon much earlier in the universe than previously thought possible, and an exotic new proposal as an alternative to dark matter. Plus, we have radioactive trivia and a slew of space news with a busy week in rocket and spaceship activity.

    • 43 min
    Volcanic Activity on Venus RIGHT NOW!

    Volcanic Activity on Venus RIGHT NOW!

    There is a mountain - or should we say a volcano - of evidence, building that suggests volcanic activity on Venus during the time of the Magellan mission in the 1990s. We’ll dig into that, struggle to get our script right, ponder the Fantastic Voyage, upcoming spaceflight milestones, and much more.

    • 39 min

Customer Reviews

4.8 out of 5
109 Ratings

109 Ratings

NikolaiGranakov ,

Great science podcast!

I look forward to this every week, it’s one of my favorites. Jim is hilarious!

mr foo ,

Informative and fun at the same time

I can't say I have come across many science podcasts that are both informative and fun -- amazingly this podcast does both.

S-DUBB ,

Is Jim the best or is it just me?

This is the best podcast of its kind. Hands down.

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