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The 365 Days of Astronomy

365DaysOfAstronomy.org
Mars
NASA
Black Holes
James Webb Space Telescope
Moon
Milky Way
Exoplanets
Jupiter
Planetary Science Institute
Asteroids
Astronomy
Meteorites
Constellations
Dark Matter
Earth
Near-Earth Objects
Solar System
Artemis Program
Cosmology
Astrophysics

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 December 2025 & January 2026.

Today'... more

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com

On Episode 547 of Actual Astronomy, hosts Chris an... more

Hosted by our Director, Avivah Yamani.

Meet S301, the fastest known star in the Milky Way, racing around Sagittarius A* and offering astronomers a new way to measure the spin of our galaxy's supermassive black hole.

We've added a new way to donat... more

From July 30, 2026.

Hosted by: Dr. Pamela L. Gay (@CosmoQuest)

Science comes from many corners, and there is a need for both 600-m radio telescopes made on a great plain (Like the RATAN-600) and 60cm radio dishes built in a living room. In this A... more

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Ask a Spaceman!Paul M. Sutter

Recent Guests

Lance Benner
NASA's Jet Propulsion Laboratory scientist who led radar study of Florence
NASA/JPL
Episode: Travelers in the Night Eps. 367 & 368: Moons of Florence & Roving Venus
Dr. Jekan Thanga
University of Arizona professor
University of Arizona, SpaceTREx
Episode: EVSN - After Hours: International Moon Day 2026 With guest Jekan Thanga
Christina Williams
Researcher focused on distant galaxies and massive early-forming galaxies
NOIRLab
Episode: NOIRLab - The Start of the LSST
Yumi Choi
Assistant astronomer, Rubin Community Science Team; studies nearby star-forming dwarf galaxies
NOIRLab
Episode: NOIRLab - The Start of the LSST
Rhonda Stroud
Director, Buseck Center for Meteorite Studies at Arizona State University
Arizona State University
Episode: EVSN - After Hours: Space Rocks Collected for Science With Guest Dr. Rhonda Stroud
Roger Deane
Director of IDIA
Inter-University Institute for Data Intensive Astronomy (IDIA)
Episode: The Cosmic Savannah Ep. 84: Celebrating 10 Years of IDIA
Walter Silima
Astronomy Support Specialist at IDIA
IDIA
Episode: The Cosmic Savannah Ep. 84: Celebrating 10 Years of IDIA
Sally McFarlane
Associate Director for Development and Outreach, University of the Western Cape
IDIA/UWC
Episode: The Cosmic Savannah Ep. 84: Celebrating 10 Years of IDIA
Casper Werzuse
Catalina Sky Survey teammate mentioned in discussion
Catalina Sky Survey
Episode: Travelers in the Night Eps. 899 & 900: Hitch Hiking an Asteroid to Mars & Earth Life From Mars

Hosts

Fraser Cain
Host of the show
Pamela Gay
Co-host providing astronomical explanations
Avivah Yamani
Host/Project management

Reviews

4.4 out of 5 stars from 595 ratings
  • Astronomy

    I thought this was about astronomy? I guess not.

    Apple Podcasts
    1
    horsepower man
    United States2 months ago
  • Gigling

    Stop the gigling!

    Apple Podcasts
    4
    Xanthan Gum
    Germany2 months ago
  • I don't care for all the tfake

    giggling and banter

    Podcast Addict
    1
    User1234
    8 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

Listeners Say

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

Feedback on host delivery varies, with some listeners desiring less political commentary and different vocal styles.
Listeners praise the show's approachable depth and clear explanations of complex topics.
Some listeners criticizing intro music and pacing have been noted in reviews.

Chart Rankings

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

Apple Podcasts
#11
United States/Science/Astronomy
Apple Podcasts
#191
United States/Science
Apple Podcasts
#13
United Kingdom/Science/Astronomy
Apple Podcasts
#14
Canada/Science/Astronomy
Apple Podcasts
#197
Canada/Science
Apple Podcasts
#247
United Kingdom/Science

Talking Points

Recent interactions between the hosts and their guests.

Cheap Astronomy - Dear CA Ep. 137: Space Missions
Q: Dear Sheep Astronomy, How much faster is nuclear thermal propulsion?
Nuclear thermal propulsion offers a higher specific impulse than chemical rockets, which means more efficient propulsion and potentially shorter travel times, but it comes with higher power requirements, launcher and reactor challenges, and significant heat management hurdles that must be solved before it can be practical for Earth-to-Mars missions.
NOIRLab - The Start of the LSST
Q: What are the four main science goals of LSST?
The four goals are to map the Milky Way, build an inventory of the solar system including near-Earth objects, observe the transient sky to catch explosive events and evolving objects, and gain a deeper understanding of dark matter and dark energy by analyzing how light from distant galaxies is distorted by foreground matter.
NOIRLab - The Start of the LSST
Q: What is the Legacy Survey of Space and Time (LSST)?
LSST is planned as a ten-year survey that will map the entire southern sky about every three days, creating a large, time-resolved 'cosmic movie' to study changes in the universe and to reach far back into cosmic history.
Ask A Spaceman Ep. 276: What Would Happen if the Sun…Stopped?
Q: What would happen if the Sun stopped fusion right now?
Nothing immediately dramatic; the Sun would continue to shine for a very long time due to stored heat and gravitational contraction, with changes unfolding over tens of thousands to millions of years, and neutrino signals would fade before visible changes become evident.
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.

Audience Metrics

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

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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?

The show features earnest, accessible discussions of current space science, astronomy instrumentation, and planetary exploration, with a strong emphasis on large-scale surveys, space missions, and observational techniques. Recent episodes highlight sky surveys and open data, lunar and asteroid science, meteorites, eclipses, and the LSST era, often pairing researchers with practical, upside-down-the-pizza ideas for future exploration. A notable strength is blending rigorous science with broad public outreach, citizen science, and practical viewing tips, making it approachable for both enthusiasts and professionals seeking to understand how cutting-edge data and missions shape the field.

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To see how many followers or subscribers The 365 Days of Astronomy 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 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. Space Nuts: Astronomy Insights & Cosmic Discoveries
5. Ask a Spaceman!

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. Lance Benner
2. Dr. Jekan Thanga
3. Christina Williams
4. Yumi Choi
5. Rhonda Stroud
6. Roger Deane
7. Walter Silima
8. Sally McFarlane

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