Rephonic
Artwork for Astronomy Cast
Space Weapons
NASA
Nuclear Weapons
Water Worlds
Satellites
Russia
Electromagnetic Pulses
James Webb Space Telescope
Spacex
China
Outer Space Treaty
Telescopes
Mars
Europa
Space
Astronomy
Solar Cycle 25
Space Exploration
Cold War
Partial Nuclear Test Ban Treaty

Take a fact-based journey through the cosmos. Tune in to hear weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (Planetary Science Institute), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about the univer... more

PublishesWeeklyEpisodes649Founded19 years ago
Number of ListenersCategories
AstronomyNatural SciencesScience

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Artwork for Astronomy Cast

Latest Episodes

Astronomy Cast Ep. 766: How Spacecraft End By Fraser Cain & Dr. Pamela Gay End-of-Life Planning for Your Spacecraft! Streamed live October 1, 2025. Your spacecraft has reached the end of its mission. You’ve done everything you can to keep it operatio... more

Astronomy Cast Ep. 765: Rockets vs The Environment By Fraser Cain & Dr. Pamela Gay Streamed live on Sep 22, 2025. We don’t launch a lot of rockets every year, so their impact on the environment is minimal compared to other forms of transportation. Bu... more

Astronomy Cast Ep. 764: Cleared For Launch! By Fraser Cain & Dr. Pamela Gay Streamed live September 17, 2025. This week, we look at the process behind rockets getting licensed to launch, and everyone around the pad getting notified to stay away as T-... more

Astronomy Cast Ep. 763: Interstellar Comets By Fraser Cain & Dr. Pamela Gay Streamed live Sep 8, 2025. Welcome to the first episode of our 19th season! This week we look at objects coming from other solar systems that come passing on by our Sun. Duri... more

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Hosts

Fraser Cain
Publisher of Universe Today, with extensive experience in astronomy journalism and science communication.
Dr. Pamela L. Gay
Senior Scientist for the Planetary Science Institute and Director of CosmoQuest with a focus on citizen science and astronomy outreach.

Reviews

4.8 out of 5 stars from 5.4k ratings
  • Annoying

    Dr Pam seems goofy and too silly to take a science podcast serious. She regularly doesn’t actually know what she talks about. DEI hire? Broken speech. Doesn’t know her info. Unprofessional and seems to be looking for Crain To fill in her ignorance. Get a real professional. She’s not smart.

    Apple Podcasts
    1
    Ztrippin
    United States3 months ago
  • It’s just the best!!

    Was the first podcast I ever listened to….. and it’s still just as fantastic approaching 800 episodes. Thanks to you both for teaching me so much about something I love learning about so much.

    Apple Podcasts
    5
    Benny_Boy2000
    United Kingdom3 months ago
  • Skip it

    Thin content, frequent commercial breaks

    Apple Podcasts
    2
    macdon763
    United States5 months ago
  • Lacking Discernment

    I listen to this show because I enjoy hearing your insights on astronomy. It is very unprofessional, unhelpful, and unnecessary to waste airtime complaining that your political candidate didn’t win the recent presidential election. Please work through your personal issues, and stay on point. (Ref: Ep 743)

    Apple Podcasts
    2
    MWarrior
    United States8 months ago
  • BurnsKJ

    I’ve been listening to this podcast for many years and have been disappointed by the talk of politics by Dr. Gay. The November 18 podcast was disheartening as I am not interested in hearing anyone’s politics. Other people who listen to this podcast told me to listen to Fraser Cain on Universe Today instead. So for now, I bid a sad adieu.

    Apple Podcasts
    2
    BurnsKJ
    United States9 months ago

Listeners Say

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

Listeners appreciate the educational depth and engaging discussions about astronomy, often praising the hosts' chemistry and ability to present complex topics in an understandable way.
There are criticisms regarding occasional political discussions that some feel detract from the primary focus of science.
Audience members value the dedication to science outreach and community engagement, with many expressing loyalty after years of listenership.

Chart Rankings

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

Apple Podcasts
#8
United States/Science/Astronomy
Apple Podcasts
#153
United States/Science
Apple Podcasts
#7
Canada/Science/Astronomy
Apple Podcasts
#9
United Kingdom/Science/Astronomy
Apple Podcasts
#105
Canada/Science
Apple Podcasts
#141
United Kingdom/Science

Talking Points

Recent interactions between the hosts and their guests.

Ep. 707: What Goes Into A Sample Return Mission? Moon & Mars
Q: So there is a bold plan and a less bold plan. What are they?
The American plan involves the Perseverance Rover gathering samples on Mars to be returned by a future mission, while the less ambitious Chinese plan aims for a simpler Mars sample return mission.
Ep. 707: What Goes Into A Sample Return Mission? Moon & Mars
Q: So tell me about the mission. What did the Chinese do?
The Chinese have been testing all the technologies they need with the Chang'e series, culminating in the recent Chang'e 5, which successfully returned samples from the Moon.
Ep. 219 - Planck Mission - REMASTER
Q: When should we expect significant results from the Planck mission?
Significant results are expected to begin coming out around the start of 2012, with more comprehensive data released approximately a year after that.
Ep. 219 - Planck Mission - REMASTER
Q: What challenges do scientists face when using data from Planck?
Scientists need to filter out interstellar noise and other heat sources that can contaminate the light they are interested in.

Audience Metrics

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

Listeners per Episode
Gender Skew
Location
Interests
Professions
Age Range
Household Income
Social Media Reach

Frequently Asked Questions About Astronomy Cast

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

Discussions on astronomical topics cover a wide range of subjects, including celestial bodies, space exploration, and fundamental principles of cosmology. The hosts frequently analyze current events in astronomy, advocate for space missions, and explore new scientific discoveries. Noteworthy elements include a commitment to science education and public engagement, along with a balance of informal banter that makes complex topics accessible to a broad audience. The conversational approach, combined with technical insight from a knowledgeable astronomer, likely contributes to an engaging experience that appeals to both enthusiasts and newcomers to the field.

Where can I find podcast stats for Astronomy Cast?

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How many listeners does Astronomy Cast get?

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What are the audience demographics for Astronomy Cast?

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How many subscribers and views does Astronomy Cast have?

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Which podcasts are similar to Astronomy Cast?

These podcasts share a similar audience with Astronomy Cast:

1. Universe Today Podcast
2. The 365 Days of Astronomy
3. SpaceTime: Your Guide to Space & Astronomy
4. The Supermassive Podcast
5. Ask a Spaceman!

How many episodes of Astronomy Cast are there?

Astronomy Cast launched 19 years ago and published 649 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 Astronomy Cast?

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