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The 365 Days of Astronomy

365DaysOfAstronomy.org
NASA
Mars
Moon
Exoplanets
James Webb Space Telescope
Milky Way
Constellations
Near-Earth Objects
Meteorites
Artemis Program
Cosmology
Betelgeuse
Planetary Science Institute
Asteroids
Dark Matter
Comets
Messier Objects
Hubble Space Telescope
Black Holes
Apophis

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
Number of ListenersCategories
AstronomyScience

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Artwork for The 365 Days of Astronomy

Latest Episodes

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

(Times in Eastern)

• - Oct 1: Moon at perigee; ... more

September Part 2.

Dustin Ruoff (!!!) and Dr. Jenifer "Dr. Dust" Millard host.

Damien Phillips, John Wildridge and Dustin Ruoff produce.

Live from AstroCamp! It's Chatty McChatty time again!

Dustin pops over the pond for a visit to AstroCamp!... more

Objective: objects!

Hosted by Steve Nerlich.

Dear Cheap Astronomy – How often does the solar system capture or eject things?

The first evidence that stellar systems might eject things were observations of rogue planets knocked out of their syst... more

www.youtube.com/watch?v=hW_eLqrmjZ4

Streamed live on Sep 21, 2026

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

Today we begin a new series on rockets and spacecraft, dealing with each of their components. It'... more

Key Facts

Accepts Guests
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Recent Guests

Dr. Jeffrey Cargill
Senior Scientist, Planetary Science Institute
Planetary Science Institute
Episode: EVSN - No Good, Very Bad News and Some Planetary Palate Cleansers
Rose Matheny
Catalina Sky Survey teammate
Catalina Sky Survey
Episode: Travelers in the Night Eps. 375 & 376: Extraterrestrial Whales & Tiny Space Rock
John Moustakas
Professor at Siena University, astrophysics/astronomy researcher
Siena University
Episode: NOIRLab - The DESI Legacy Imaging Surveys
Kelly Blumenthal
Director of the IAU Office for Astronomy Outreach
International Astronomical Union (IAU)
Episode: Big Impact Astronomy - Inspiring the World Through Astronomy With Dr. Kelly Blumenthal
Kevin Grazier
NASA scientist; science advisor to Battlestar Galactica and Eureka
NASA/JPL
Episode: Astronomy Cast Ep. 53: Astronomy in Science Fiction
Dr. Vishnu Reddy
Astronomer, lead researcher on HO3 properties
University of Arizona Lunar and Planetary Laboratory
Episode: Travelers in the Night Eps. 373 & 374: Plant Companionship & Earth's Pet Rock
Dr. William K. Hartmann
Planetary scientist, space artist, one of the founders of the Planetary Science Institute
Planetary Science Institute
Episode: EVSN - After Hours #8: Making Moons & Getting Cratered With William K Hartmann
David Kipping
Astronomer, Cool Worlds Lab at Columbia University
Columbia University, Cool Worlds Lab
Episode: Guide To Space - Are Aliens Watching Us & How Could We Hide? With Dr. David Kipping
Danny Jacobs
Arizona State University Professor, radio astronomy expert
Arizona State University
Episode: EVSN - After Hours: Doing Big Science With Light Tools & Guest Dr. Danny Jacobs

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 596 ratings
  • Astronomy

    I thought this was about astronomy? I guess not.

    Apple Podcasts
    1
    horsepower man
    United States3 months ago
  • Gigling

    Stop the gigling!

    Apple Podcasts
    4
    Xanthan Gum
    Germany4 months ago
  • I don't care for all the tfake

    giggling and banter

    Podcast Addict
    1
    User1234
    9 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.

Talking Points

Recent interactions between the hosts and their guests.

NOIRLab - The DESI Legacy Imaging Surveys
Q: What types of research do these surveys enable?
They enable studies of dark energy through precise distance measurements to millions of objects, plus detailed investigations of nearby galaxies, their internal structures, and the Milky Way's formation history using the large, uniform dataset to build robust catalogs like the Siena Galaxy Atlas and to explore the lowest-metallicity galaxies as laboratories for early star formation.
NOIRLab - The DESI Legacy Imaging Surveys
Q: What telescopes and instruments contributed to these surveys and how were they conducted?
The northern survey used the 90Prime instrument on the Bok 2.5m telescope, observing blue and red bands, while the Mosaic camera on the Blanco 4m telescope contributed in the north as well. In the south, the DECam at CTIO near La Serena was deployed, enabling wide-area coverage and thus a near-complete sky map when combined with the northern data.
Cheap Astronomy - Dear CA # 139: Clearing the Neighborhood
Q: Dear Cheap Astronomy, Can we really deflect asteroids with rocket engines?
The hosts explain that while rocket engines could alter trajectories, they are energy-inefficient and costly due to fuel mass, and other methods like gravity tugs or mass drivers may be more practical, especially for rubble-pile asteroids.
EVSN - After Hours: Doing Big Science With Light Tools & Guest Dr. Danny Jacobs
Q: What makes radio astronomy different from optical astronomy?
Radio astronomy uses a much wider range of wavelengths, allowing us to see things invisible to the naked eye and to map phenomena like hydrogen gas and galaxy rotation. Receivers tune to the right wavelength, and even everyday materials can be used to build radio dishes when scaled to the appropriate wavelengths.
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.

Audience Metrics

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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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How many listeners does The 365 Days of Astronomy get?

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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. Astronomy Cast
3. SpaceTime with Stuart Gary
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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Our systems regularly scour the web to find email addresses and social media links for this podcast. We scanned the web and collated all of the contact information that we could find in our podcast database. But in the unlikely event that you can't find what you're looking for, our concierge service lets you request our research team to source better contacts for you.

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What guests have appeared on The 365 Days of Astronomy?

Recent guests on The 365 Days of Astronomy include:

1. Dr. Jeffrey Cargill
2. Rose Matheny
3. John Moustakas
4. Kelly Blumenthal
5. Kevin Grazier
6. Dr. Vishnu Reddy
7. Dr. William K. Hartmann
8. David Kipping

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