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The 365 Days of Astronomy

365DaysOfAstronomy.org
Astronomy
NASA
Mars
Black Holes
Asteroids
Moon
James Webb Space Telescope
Jupiter
Earth
Exoplanets
Planetary Science Institute
Milky Way
Dark Matter
Saturn
Artemis Program
Constellations
Meteorites
Hubble Space Telescope
Space Debris
Cosmology

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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AstronomyScience

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Artwork for The 365 Days of Astronomy

Latest Episodes

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 May 2026.

Today's 2 topics:

- In 2... more

Neutron stars, the compact remains of a massive star following a supernova explosion, are the densest matter in the Universe. Some neutron stars, known as magnetars, also claim the record for the strongest magnetic fields of any object. How magnetars... more

Hosted by Dr. Pamela L. Gay.

From July 8, 2026.

The physics behind modern spaceflight explores everything from aerodynamics to thermodynamics with a lot of kinematics playing a role along the way. We welcome on guest Trisha Muro to discuss her ne... more

spacescoop.org/en/scoops/2609/why-does-jupiter-have-bigger-moons-than-saturn/

Hosted by our editor, Richard Drumm.

Jupiter and Saturn are the gas giants in our Solar System. Ummm… Uranus & Neptune are now called ice giants. But back to Ju... more

Key Facts

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

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Recent Guests

Trisha Muro
Author and former physics teacher, science writer for Science News
Author of It's Just Rocket Science
Episode: EVSN - After Hours: Exploring Physics Through Spaceflight Missions with author Trisha Muro
Pamela Gay
Professor of astronomy invited as guest to discuss cosmology and Big Bang evidence
Southern Illinois University Edwardsville
Episode: Astronomy Cast Ep. 6: Ep. 6: More Evidence For the Big Bang
Eric Matys
Aerospace correspondent featured in Tales from the Launchpad
Episode: EVSN - Tracing the Hidden & Revealing the Past
Emily McMahon
Author of Sedna in the Depths of the Solar System (Sedna essay, November 2020)
Former high school student, later pursuing university degrees in Astronomy/Physics and Education
Episode: H'ad Astra Historia - Ep 304: More 'This Month in Astronomical History' Sedna & Lunokhod
Vivian Carvajal
Catalina Sky Survey teammate
Catalina Sky Survey
Episode: Travelers in the Night Eps. 893 & 894: DarkSky Oregon & Discovery Night at the Schmidt
David Buckley
Professor, SALT project scientist
South African Astronomical Observatory / SALT
Episode: The Cosmic Savannah Ep. 083: Celebrating 20 Years of SALT
Chanda Prescod-Weinstein
Cosmologist and author; discussed in-depth themes from her book and public discourse
University of New Hampshire (faculty); author of The Edge of Space and Time, Particles, Poetry, and the Cosmic Dream Boogie
Episode: EVSN After Hours: Our Shape-Shifting Universe With Author Chanda Prescod-Weinstein
Stephen Eales
Professor of astrophysics; speaker sharing the secret history of a space mission
Cardiff University
Episode: Awesome Astronomy - June Part 2: The Secret History of a Space Mission
Arnauld Nicogossian
Professor, George Mason University; former NASA official
George Mason University / NASA
Episode: Deep Astronomy - Planetary Environments and Health Risks

Host

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

Reviews

4.4 out of 5 stars from 592 ratings
  • Gigling

    Stop the gigling!

    Apple Podcasts
    4
    Xanthan Gum
    Germanya month ago
  • I don't care for all the tfake

    giggling and banter

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

    I love the story-telling feel to this podcast.

    Apple Podcasts
    5
    coolfactor
    Canadaa year 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

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
#13
United States/Science/Astronomy
Apple Podcasts
#174
United States/Science
Apple Podcasts
#11
Canada/Science/Astronomy
Apple Podcasts
#20
United Kingdom/Science/Astronomy
Apple Podcasts
#132
Canada/Science
Apple Podcasts
#206
United Kingdom/Science

Talking Points

Recent interactions between the hosts and their guests.

Cheap Astronomy - Dear CA Ep. 136: Complexities
Q: Dear Cheap Astronomy, why do solar eclipse paths of totality run in different directions?
The path directions result from the combination of the Moon's orbital motion, the Sun's apparent motion in the sky, and the observer's location on Earth. The eclipse trace is the intersection of the Moon's shadow with the Earth's surface, which shifts with latitude, the tilt of Earth's axis, and the relative timings of the Moon's crossing and the Sun's position.
Astronomy Cast Ep. 6: Ep. 6: More Evidence For the Big Bang
Q: What's next after discussing the basic lines of evidence for the Big Bang?
Pamela explains that cosmology continues to refine parameters and models by matching cosmic microwave background details and elemental abundances, while exploring inflationary scenarios to account for the observed uniformity and structure.
The Cosmic Savannah Ep. 083: Celebrating 20 Years of SALT
Q: What were the main challenges in convincing international partners to fund SALT?
Key challenges included securing half of the funding from outside South Africa, coordinating international institutions, and aligning government support with the project's ambitious engineering and scientific goals, all while navigating geopolitical and organizational logistics.
The Cosmic Savannah Ep. 083: Celebrating 20 Years of SALT
Q: What is SALT and what makes it unique?
SALT is the largest optical/infrared telescope in the Southern Hemisphere, built from 91 hexagonal segments to form a 10-meter aperture, offering substantial light-gathering power and multi-object spectroscopy capabilities that expanded both galactic and extragalactic studies in South Africa.
Deep Astronomy - Planetary Environments and Health Risks
Q: How do you sterilize spacecraft these days, and what does bake mean?
Baking involves heating spacecraft to about 110 C for around 50 hours to kill Earth microbes, a practice used in Viking that has been weighed against cost and impact on instruments for later missions.

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. Trisha Muro
2. Pamela Gay
3. Eric Matys
4. Emily McMahon
5. Vivian Carvajal
6. David Buckley
7. Chanda Prescod-Weinstein
8. Stephen Eales

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