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Artwork for 365 Days of Astronomy

365 Days of Astronomy - Weekly Edition

Fraser Cain & Dr. Pamela L. Gay
NASA
Astronomy
Black Holes
Mars
Astrophysics
James Webb Space Telescope
Dark Energy
Gravitational Waves
Cosmic Microwave Background
Parker Solar Probe
Neutron Stars
Neil Gehrels
Nuclear Weapons
Supernova
Spacex
Exoplanets
Swift Telescope
Universe
Rogue Planets
Matter

The weekly podcast from the International Year of Astronomy 2009. This podcast comes out weekly and includes each daily episode of the 365 Days of Astronomy Podcast.

PublishesWeeklyEpisodes523Founded17 years ago
Number of ListenersCategories
ScienceNatural Sciences

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Artwork for 365 Days of Astronomy

Latest Episodes

Streamed live on Jun 15, 2026.

Well, we’re just a couple of weeks away from summer hiatus and so it’s time to give you some homework. Here’s our list of stuff we’ve been reading watching and playing. This should fill the Astronomy-Cast-shaped hole ... more

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live June 10, 2026.

We’re about to take a much needed 2 month hiatus. But just because we’re not here doesn’t mean space stops existing and doing things. Today, let... more

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Jun 1, 2026.

Mars is cold & dry today, but the evidence is growing that it used to be warmer & wetter. with seas & oceans that covered large parts of its su... more

Streamed live on May 10, 2026.

This is the final episode of our series on sci-fi universes. And this week we will tackle “The Expanse”. Now we’ve got fusion drives, Proto-matter, g-forces! Listen up, belta lawda! Let's look at the science of our ow... more

Key Facts

Contact Information
Podcast Host
Number of Listeners
Find out how many people listen to this podcast per episode and each month.

Similar Podcasts

People also subscribe to these shows.

Astronomy Cast
Astronomy CastFraser Cain and Dr. Pamela Gay
The 365 Days of Astronomy
The 365 Days of Astronomy365DaysOfAstronomy.org
The Ancients
The AncientsHistory Hit

Recent Guests

Lee Feinberg
Architect of the Hubble Worlds Observatory; involved with James Webb; ex-NASA
NASA / JWST project
Episode: Ep. 785: Magnetars

Hosts

Fraser Cain
Host of Astronomy Cast; publisher of Universe Today
Pamela Gay
Co-host; astronomer and science education advocate

Reviews

4.9 out of 5 stars from 774 ratings
  • Too little

    Too many empty pauses. Too much uninteresting small talk. Too little good solid astronomy talk. Please unsubscribe me. Thank you. Also, one needs to send a “nickname” with the comment. I tried 3 and all were “taken.”

    Apple Podcasts
    1
    xzlqks
    United States6 years ago
  • Excellent

    Great listening for the astronomy fan but please change that awful intro music.

    Apple Podcasts
    4
    lakeswalker
    United Kingdom7 years ago
  • Excellent podcast

    I listen to a few astronomy podcasts, this is one of my favourites.

    Apple Podcasts
    5
    Floorwalker124
    Australia15 years ago
  • Mostly Gems

    Mostly Gems, some duds, but if you like, love, or live astronomy there's something in it for you. And it's daily(compiled here weekly)! Open up your mind, truth is stranger (and way more fun) than fiction.

    Apple Podcasts
    5
    GTNAKD
    United States16 years ago
  • DanniStories Thumbs Up

    Entertaining and informative, they are short enough to squeeze in between other things. Each is different, and there are guest podcasters.

    Apple Podcasts
    5
    Dannis Cole
    United States17 years ago

Listeners Say

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

Many enjoy the blend of science with moments of pop-culture discussion and guest insights.
Some feedback notes pacing issues or production quirks, but overall high regard for clarity and enthusiasm.
Listeners appreciate the accessible breakdown of complex space topics and the engaging two-host dynamic.

Chart Rankings

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

Talking Points

Recent interactions between the hosts and their guests.

Ep. 756: SphereX
Q: Is there a highest possible frequency of light?
There is no limit to the wavelength of light, just limitations in what our equipment can detect.
Ep. 756: SphereX
Q: How can an armchair astronomer consume detailed data from the SphereX mission?
It'll all be landing in a NASA repository, probably in a large data release similar to the way they do with Gaia.
Ep. 753: Why is the Moon's South Pole So Interesting?
Q: Are there any plans for a telescope to be placed at the South Pole?
Current discussions involve putting telescopes both at the South Pole and on the far side, with the possibility of utilizing lunar regolith for construction.
Ep. 753: Why is the Moon's South Pole So Interesting?
Q: Is landing at the South Pole of the moon more difficult than landing elsewhere on the moon?
Yes, landing at the South Pole is significantly more difficult due to complex geology and the need for more propulsion to change orbits.
Ep. 753: Why is the Moon's South Pole So Interesting?
Q: Will it be safer to mine the asteroid belt in other locations than the moon, considering how important the moon is to the Earth?
No, mining on the Moon is safer because it has enough gravity, offering secure orbits and reduced risks compared to the fragile and poorly understood asteroid belt.

Audience Metrics

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

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Frequently Asked Questions About 365 Days of Astronomy

What is 365 Days of Astronomy about and what kind of topics does it cover?

A science-leaning show that blends rigorous space physics with pop culture, delivering accessible discussions across a wide range of astronomy topics. Episodes frequently compare real physics to fictional universes (Stargate, Star Trek, Star Wars), explore planetary science, space missions, and cosmic phenomena, and occasionally feature guests or behind-the-scenes production notes. The tone is informative yet approachable, with a strong emphasis on explaining concepts clearly for curious listeners who enjoy both deep dives and lighthearted banter. Noteworthy is the consistent pairing of two seasoned hosts who bring decades of space journalism and scientific outreach to every conversation, making complex ideas entertaining and shareable for ... more

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Which podcasts are similar to 365 Days of Astronomy?

These podcasts share a similar audience with 365 Days of Astronomy:

1. Astronomy Cast
2. Universe Today Podcast
3. The 365 Days of Astronomy
4. The Ancients
5. Planetary Radio: Space Exploration, Astronomy and Science

How many episodes of 365 Days of Astronomy are there?

365 Days of Astronomy launched 17 years ago and published 523 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 365 Days of Astronomy?

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What guests have appeared on 365 Days of Astronomy?

Recent guests on 365 Days of Astronomy include:

1. Lee Feinberg

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