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Walkabout the Galaxy - Podcast

Walkabout the Galaxy

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

Natural Sciences Astronomy Humor Science Comedy
Update frequency
every 9 days
Average duration
44 minutes
Episodes
346
Years Active
2015 - 2025
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Trojans and Axions

Trojans and Axions

Europa’s got miniature tectonic activity, and a dark matter candidate may real itself through micro-gravitational lensing events. Dr. Audrey Martin joins us to discuss the strange spectra of the Troj…

00:47:19  |   Wed 07 Dec 2022
Up, Up, and Away

Up, Up, and Away

Artemis 1, the most powerful rocket to ever leave the Earth, is up and on its way to the Moon after more hydrogen leaks than we care to remember, and Up Astroquark Dr. Hannah Sargeant signs off on he…

00:49:46  |   Wed 23 Nov 2022
Chasing Geotail and Martian Impacts

Chasing Geotail and Martian Impacts

The Mars Insight lander detected an impact that produced a stadium-sized crater on the red planet, and the 30-year magnetospheric mission Geotail comes to an end. An experiment deep underground on Ea…

00:47:16  |   Wed 02 Nov 2022
Astroquarks 300!

Astroquarks 300!

Join us for a special reunion of all the astroquarks with a fresh look at some of our favorite topics, from hunting for biosignatures on Venus and plumes on Europa to the quivering of space-time meas…

00:48:04  |   Wed 26 Oct 2022
Life on Mars Killed Life on Mars

Life on Mars Killed Life on Mars

We absolutely definitely have not seen any life on Mars. That said, new research suggests that over 3 billion years ago there may have been a certain kind of habitable climate on Mars for some little…

00:41:35  |   Wed 19 Oct 2022
Pop III!

Pop III!

Astronomers have new evidence of the gaseous remnants of the supernova of a population III star from just 700 million years after the big bang. Speaking of big bangs, DART smacked Dimorphos and produ…

00:49:14  |   Wed 12 Oct 2022
Payback for Chicxulub!

Payback for Chicxulub!

Humanity gets a bit of payback on asteroids for the rude destruction of the dinosaurs and almost all life on Earth 65 million years ago with the DART spacecraft’s successful impact on a teensy-weensy…

00:48:04  |   Wed 28 Sep 2022
Boom: DART, Volcanoes, and Supernovae

Boom: DART, Volcanoes, and Supernovae

There are lots of explosions in this episode, beginning with the upcoming planned impact of the DART mission into a teeny-weeny asteroid to test planetary protection techniques. Then we take a look a…

00:46:48  |   Wed 21 Sep 2022
DragonCon 2022: To the Moon with Artemis and More

DragonCon 2022: To the Moon with Artemis and More

The Astroquarks venture into the belly of the beast with our first live recording at the amazing DragonCon in Atlanta. Join us for a look ahead at upcoming Moon missions beyond Artemis, dragon trivia…

00:39:53  |   Tue 06 Sep 2022
Water Worlds at Distant Suns

Water Worlds at Distant Suns

We take a journey to the Radius Valley to explore an exoplanet larger than the "Super Earths" and smaller than Neptune and Uranus. This one in particular is interesting not only because of its unusua…

00:48:57  |   Wed 31 Aug 2022
Ancient Astronomers and Ancient Lunar Impacts

Ancient Astronomers and Ancient Lunar Impacts

We return to two of our favorite topics, the red giant star Betelgeuse, and of course the Moon. Some clever historical detective work has revealed that Betelgeuse was not red, but yellow, two thousan…

00:52:46  |   Wed 24 Aug 2022
Strange Lightning and the Youngest Planet

Strange Lightning and the Youngest Planet

Lightning generally goes cloud to cloud or cloud to ground, but sometimes it shoots up to the ionosphere at the edge of space. We take a close look at strange lightning with lightning trivia. A baby …

00:46:13  |   Wed 17 Aug 2022
Is There Something Wrong with the Standard Model?

Is There Something Wrong with the Standard Model?

Korea sends its first mission to the Moon, and Mars sent a very old piece of itself to Earth. Meanwhile, the Large Hadron Collider is finding more odd collisional products than expected: the rate of …

00:45:27  |   Wed 10 Aug 2022
The Edges of Space, the Solar System, and the Universe

The Edges of Space, the Solar System, and the Universe

In this episode we explore clouds at the edge of space in the Earth’s upper atmosphere and discoveries of galaxies far more distant than we have seen before. We also explore why it’s so difficult to …

00:48:13  |   Wed 03 Aug 2022
JWST and the Circle of Life of Stars

JWST and the Circle of Life of Stars

We survey the initial five data releases from the JWST, from squiggly lines showing the composition of a distant planet’s atmosphere, to turbulent star forming regions, and the depths of space and ti…

00:43:24  |   Fri 29 Jul 2022
Fly Me to the Moon Again and Again

Fly Me to the Moon Again and Again

We’ve had more experience flying to the Moon than you might think, and done some odd things with it, like feeding it to cockroaches. Join us for a look at the history of flights to the Moon, an inter…

00:45:02  |   Thu 07 Jul 2022
Two Odd Balls: Charon and Arrokoth

Two Odd Balls: Charon and Arrokoth

Journey with us to the far reaches of the outer solar system where we take a closer look at two small objects explored by New Horizons: Pluto's moon Charon and the Kuiper Belt Object Arrokoth. Charon…

00:49:26  |   Wed 29 Jun 2022
Noxious Fumes from Stars and Moons

Noxious Fumes from Stars and Moons

What does Jupiter’s volcanic moon Io have in common with one of the largest stars in the galaxy? Both are belching sulfur compounds, though for very different reasons. We learn about sulfuric outgass…

00:42:27  |   Wed 22 Jun 2022
The Galactic Gamma Ray Background from Pulsars

The Galactic Gamma Ray Background from Pulsars

Pulsars are becoming the astrophysical version of big collisions for planetary scientists: they are explaining, perhaps, more and more things. Tune into this episode, where we welcome back Adam LaMee…

00:45:36  |   Wed 15 Jun 2022
Space Haboobs and Martian Haboobs

Space Haboobs and Martian Haboobs

The astroquarks talk haboobs. Unfortunately Jim is not with us to giggle, but Dr. Katariina Nykyri joins Strange and Charm to explain space weather and magnetospheric slingshots, and the Perseverance…

00:53:36  |   Wed 01 Jun 2022
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