Rephonic
Artwork for Walkabout the Galaxy
James Webb Space Telescope
Enceladus
Globular Clusters
Mars
NASA
Milky Way
Asteroid Psyche
Saturn
Cassini
Bennu
Supermassive Black Holes
Uranus
Black Holes
Cosmic Rays
Artemis Program
Pluto
Cryovolcano
Moore's Somnus
Water
Asteroids

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

PublishesWeeklyEpisodes341Founded11 years ago
Number of ListenersCategories
Natural SciencesComedyScience

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Artwork for Walkabout the Galaxy

Latest Episodes

Original top quark Tracy Becker is back to bring us up to speed Europa Clipper's flyby of Mars, and we learn about a new way for planetary cores to form without so much heat. Join us for all this, plus lava fountain trivia, space news, and much more.... more

A major update to the predicted end of the universe has it coming much earlier than previously anticipated. However, we still have plenty of time to get our affairs in order, and the update has to do with spaghettification, and anything with spaghett... more

We get lucky and catch a rogue supermassive black hole in the act of slurping up a star as it meanders through a distant galaxy. Closer to home, the detection of a second trinary, or triple, system in the Kuiper Belt beyond the orbit of Neptune bolst... more

The asteroid Vesta may be a fragment of a much larger protoplanet, and astronomers examine old data to discover a large molecular cloud lurking right in the solar system's backyard. Get all the details, plus habitable exoplanets get another look, spa... more

Key Facts

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Number of Listeners
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Recent Guests

Tracy Becker
Astrophysicist and member of Europa Clipper mission team, formerly a graduate student at UCF
NASA
Episode: OG Top Goes to Europa
Cady Coleman
PhD chemist, retired US Air Force Colonel, former NASA astronaut, and author
Episode: Adventures in Space the Cady Way
Dr. Erika Nesvold
Astrophysicist and author of Off Earth, Ethical Questions and Quandaries for Living in Outer Space.
Author
Episode: Ethical Dilemmas in Space Exploration

Hosts

Josh Caldwell
Co-host and researcher, known for his engaging style and deep knowledge of astronomy.
Audrey Martin
Co-host and researcher, active in making complex astronomical topics accessible and entertaining.
Jim Cooney
Co-host with a talent for humor and making science relatable, enriching the discussions with a personal touch.
Addie Dove
Co-host and contributor, involved in bringing a unique perspective to discussions about astronomy and science.

Reviews

4.8 out of 5 stars from 140 ratings
  • Keep it up

    The podcast is good, but I’m really intrigued by Josh’s point of view and enjoy how he breaks everything down for undereducated folks such as myself to understand.

    Go science! And keep up the good work!

    Apple Podcasts
    5
    Dave of Det
    United States2 months ago
  • 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 and makes me feel connected to important developments in astronomy.

    Apple Podcasts
    5
    mr foo
    United States8 months ago
  • Great science podcast!

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

    Apple Podcasts
    5
    NikolaiGranakov
    United Statesa year ago
  • 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.

    Apple Podcasts
    5
    mr foo
    United Statesa year ago
  • Should get the Nobel prize for podcasting

    I seriously love this show. I look forward to Wednesdays 33.3% more now, in anticipation of listening to a fresh episode when it drops. The hosts are fun - Jim is great especially - and when all four [of the hosts] record together there is an added synergy. It’s smart and nerdy, spontaneous and refreshing. Sometimes hilarious. I have a side interest in all things related to space - and I find that this show is great to nerd out to. It covers a wide spectrum of space related topics, and has trivi... more

    Apple Podcasts
    5
    NikolaiGranakov
    United States2 years ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Many reviews commend the hosts for their chemistry and the entertaining format that encourages listeners to engage with astronomy like never before.
Listeners appreciate the combination of education and humor, often highlighting the easygoing interaction among the hosts as a major draw.
The podcast is particularly noted for making complex astronomical topics accessible and enjoyable, suitable for both casual listeners and science professionals.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Talking Points

Recent interactions between the hosts and their guests.

A Slurping Black Hole and a Win for the Streaming Instability
Q: How long after the last human dies, assuming it's tomorrow, will the last artificial light go out?
It is about 100 years for typical artificial lights, depending on how they are powered and assuming power supply does not continue.
Are We Inside a Black Hole?
Q: How many black holes have we identified in the Milky Way Galaxy?
Approximately 15 to 50 black holes have been identified, with estimates ranging from 100 million to a billion total black holes in the galaxy.
Oort Cloud Spiral, the Color of Mars, and a New Dwarf Galaxy
Q: How many new astronomy PhDs are produced each year?
About 160 are produced each year in the U.S.
Making Big Blobs is Hard
Q: What will happen to big blobs over time?
They are unlikely to flatten out into spirals given their reduced self-interaction and gas levels.
Making Big Blobs is Hard
Q: What do you think about the formation of elliptical galaxies?
Most of the stars in the universe are in elliptical galaxies, and we've figured out they are formed through early collisions in the universe.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

Listeners per Episode
Gender Skew
Location
Interests
Professions
Age Range
Household Income
Social Media Reach

Frequently Asked Questions About Walkabout the Galaxy

What is Walkabout the Galaxy about and what kind of topics does it cover?

Engaging with the wonders of astronomy, the discussions center around a broad spectrum of topics including black holes, exoplanets, cosmic phenomena, and the latest scientific missions. Notable features include humor that weaves through complex topics, thought-provoking trivia, and a blend of light-hearted banter among the hosts, which creates a welcoming environment for both enthusiasts and casual listeners. The interactions are reflective of an informal yet informative approach to astronomy, making complex discoveries accessible to a wide range of audiences. This podcast is distinguished by the hosts' ability to present scientific information with an entertaining twist, fostering a sense of community among listeners who share a curiosity ... more

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How many listeners does Walkabout the Galaxy get?

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How many subscribers and views does Walkabout the Galaxy have?

To see how many followers or subscribers Walkabout the Galaxy has on Spotify and other platforms such as Castbox and Podcast Addict, simply upgrade your account. You'll also find viewership figures for their YouTube channel if they have one.

Which podcasts are similar to Walkabout the Galaxy?

These podcasts share a similar audience with Walkabout the Galaxy:

1. Are We There Yet?
2. Ask a Spaceman!
3. Universe Today Podcast
4. SpaceTime: Your Guide to Space & Astronomy
5. The 365 Days of Astronomy

How many episodes of Walkabout the Galaxy are there?

Walkabout the Galaxy launched 11 years ago and published 341 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact Walkabout the Galaxy?

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What guests have appeared on Walkabout the Galaxy?

Recent guests on Walkabout the Galaxy include:

1. Tracy Becker
2. Cady Coleman
3. Dr. Erika Nesvold

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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