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The 365 Days of Astronomy

365DaysOfAstronomy.org
Astronomy
Mars
NASA
Black Holes
James Webb Space Telescope
Earth
Planetary Science Institute
Jupiter
Asteroids
Exoplanets
Hubble Space Telescope
Saturn
Moon
Dark Matter
Orion Nebula
Spacex
Astrophysics
Milky Way
Meteorites
Supernovae

The 365 Days of Astronomy podcast launched in 2009 as part of the International Year of Astronomy. This community podcast continues to bring you day after day of content across the years. Everyday, a new voice, helping you see the universe we share in a new way. This show is managed by Avivah Yamani, edited by Richard Drumm. This podcast is funded through Patreon.com/CosmoQuestX and produced out o... more

PublishesDailyEpisodes300Founded18 years ago
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ScienceAstronomy

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Artwork for The 365 Days of Astronomy

Latest Episodes

Hosted by Dr. Paul M. Sutter.

What does is mean for the Universe to have a wave function? How does Hawking's "no boundary" proposal mean that the Universe comes from itself? And is it really the final answer? I discuss these questions and more in t... more

www.youtube.com/watch?v=n14RYk2qFtc

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

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 E... more

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From February 2026.

Today's 2 topics:

-... more

spacescoop.org/en/scoops/2605/story-of-suns-road-trip-through-the-milky-way-with-friends/

Did you know that our Sun and its many, uh, childhood friends were all born at a place much closer to the center of our Galaxy? Over the years, our Su... more

Key Facts

Accepts Guests
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Find out how many people listen to this podcast per episode and each month.

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People also subscribe to these shows.

Astronomy Cast
Astronomy CastFraser Cain and Dr. Pamela Gay
Ask a Spaceman!
Ask a Spaceman!Paul M. Sutter
Space Nuts: Astronomy Insights & Cosmic Discoveries
Space Nuts: Astronomy Insights & Cosmic DiscoveriesProfessor Fred Watson and Andrew Dunkley

Recent Guests

Tony Darnell
Host of Exoplanet Radio, produced by Deep Astronomy
Deep Astronomy
Episode: Exoplanet Radio - The First Exoplanet Of JWST
Dr. Angel Moharu
NASA organic geochemist
NASA
Episode: Travelers in the Night Eps. 883 & 884: Theia & Turkeys and Asteroids
Dr. Nick Erasmus
Scientist at the South African Astronomical Observatory, involved with ATLAS and Intelligent Observatory
South African Astronomical Observatory
Episode: The Cosmic Savannah - When Telescopes Think - AI and The Future of Astronomy
David Rankin
Catalina Sky Survey teammate who spotted the object
Catalina Sky Survey
Episode: Travelers in the Night Eps. 881 & 882: Dangerous Comets & David's Goliath PHA
Mario Juric
Professor at the University of Washington focused on astronomy and big data
University of Washington
Episode: NoirLab - NSF-DOE Vera C. Rubin Observatory Discovers Thousands of Asteroids
David Nagler
Astronomer and guest for this episode
Episode: Actual Astronomy - The Observer's Calendar for May 2026
Robert Sproles
CEO of ExoLaunch
ExoLaunch
Episode: EVSN - After Hours: Launching The Small(er) Things With Exolaunch CEO Robert Sproles
Dr. Al Grauer
Avid space scientist discussing asteroid impacts and near-Earth object tracking
University of Arizona's Catalina Sky Survey
Episode: Travelers in the Night Eps. 875 & 876: Newly Discovered Crater & Neighborhood Traffic
Dr. Simon de Wet
Astronomer, PhD graduate in astronomy from UCT, transitioning to postdoc in Copenhagen
University of Cape Town / DTU Copenhagen
Episode: The Cosmic Savannah - Ep. 81: One Last Burst: Gamma Rays & Afterglows

Host

Pamela Gay
Co-host, senior scientist with involvement in Space News segments

Reviews

4.4 out of 5 stars from 590 ratings
  • I don't care for all the tfake

    giggling and banter

    Podcast Addict
    1
    User1234
    5 months ago
  • Relaxing, Easy on the ears

    I love the story-telling feel to this podcast.

    Apple Podcasts
    5
    coolfactor
    Canada10 months ago
  • Unsubscribing Forever

    Pamela, please leave your political views out of a science podcast. You have lost a +5 year subscriber forever.

    Apple Podcasts
    1
    el_Bofo
    Canada2 years ago
  • over your head

    stick to what you know, go to behind the black website to get the real story

    Apple Podcasts
    1
    hamniko
    United States2 years ago
  • Good

    Good

    Apple Podcasts
    5
    Fine. Ampajwb
    China2 years ago

Listeners Say

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

Listeners praise accessible astronomy content and engaging hosts.
A few requests for quieter intros and more science-focused episodes.
Many enjoy deep dives and diverse guest voices.
Some listeners dislike the intro music and occasional political mentions.

Chart Rankings

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

Apple Podcasts
#11
United States/Science/Astronomy
Apple Podcasts
#153
United States/Science
Apple Podcasts
#12
Canada/Science/Astronomy
Apple Podcasts
#21
United Kingdom/Science/Astronomy
Apple Podcasts
#183
Canada/Science
Apple Podcasts
#8
Australia/Science/Astronomy

Talking Points

Recent interactions between the hosts and their guests.

NoirLab - NSF-DOE Vera C. Rubin Observatory Discovers Thousands of Asteroids
Q: What kinds of objects are you most excited about finding?
We're excited about a huge increase in known asteroids, as well as large numbers of trans-Neptunian objects, which will help us understand the early history of the solar system and the possible presence of a ninth planet.
NoirLab - NSF-DOE Vera C. Rubin Observatory Discovers Thousands of Asteroids
Q: Could you give us a quick overview of the Rubin Observatory?
Rubin is a new, wide-field observatory designed to image a large fraction of the sky repeatedly, producing a massive, searchable database of objects that enables thousands of researchers to study the universe from a single, coherent data stream.
Cheap Astronomy - Dear CA #134: Testing Asumptions
Q: Just how strange is reality?
Reality is normal by day-to-day standards, but physics shows that at small scales and high speeds, our intuitions fail—yet with careful experimentation we can constrain which explanations hold up, avoiding overblown leaps to exotic conclusions.
Cheap Astronomy - Dear CA # 133: Why It's Always C
Q: Dear Cheap Astronomy, why does a photon move at the speed c?
Photons move at c because they have no rest mass, which means they always travel at the maximum speed allowed by physics in a vacuum. They carry momentum without mass, and thus their behavior is governed by relativistic and quantum principles that set this universal speed limit. In media, interactions slow light down, but in a vacuum they inherently travel at c.
Had Astra Historia - Ep 302 – Take the Gloves Off, Part II
Q: What has been your favorite eclipse tour and what made it special?
The favorite was the 2016 Australia to Indonesia/Malaysia cruise; it wasn't just the eclipse itself but the chance to visit remote Spice Islands, interact with local communities, and experience a remarkable voyage across the Coral Triangle, creating lasting memories beyond the event.

Audience Metrics

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

Listeners per Episode
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Frequently Asked Questions About The 365 Days of Astronomy

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

A long-running daily science and astronomy show featuring a rotating cast of expert hosts who guide listeners through space news, deep dives, and thoughtful human-interest angles about exploration. Episodes blend mission updates, historical context, and approachable explanations, with a strong emphasis on education, outreach, and community support. Noteworthy is the inclusive, multi-voiced format and the ongoing collaboration with planetary science institutions that helps keep the content accessible to both enthusiasts and professionals.

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Which podcasts are similar to The 365 Days of Astronomy?

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

1. Universe Today Podcast
2. SpaceTime with Stuart Gary
3. Astronomy Cast
4. Ask a Spaceman!
5. Space Nuts: Astronomy Insights & Cosmic Discoveries

How many episodes of The 365 Days of Astronomy are there?

The 365 Days of Astronomy launched 18 years ago and published 300 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on The 365 Days of Astronomy?

Recent guests on The 365 Days of Astronomy include:

1. Tony Darnell
2. Dr. Angel Moharu
3. Dr. Nick Erasmus
4. David Rankin
5. Mario Juric
6. David Nagler
7. Robert Sproles
8. Dr. Al Grauer

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