299 episodes

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 (SIUE), 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 universe around us. Astronomy Cast is supported through individual donations and the sponsorship of Swinburne Astronomy Online.

Astronomy Cast Wizzard Media

    • Natural Sciences

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 (SIUE), 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 universe around us. Astronomy Cast is supported through individual donations and the sponsorship of Swinburne Astronomy Online.

    Ep. 555: Satellite Constellations and the Future of Astronomy

    Ep. 555: Satellite Constellations and the Future of Astronomy

    The other big issue at the AAS was the challenge that astronomy is going to face from all the new satellite constellations coming shortly. There are already 180 Starlinks in orbit, and thousands more are coming, not to mention the other constellations in the works. What will be the impact on astronomy, and what can we do about it?

    • 29 min
    Ep. 554: Big Telescope Controversy in Hawai'i

    Ep. 554: Big Telescope Controversy in Hawai'i

    This week we're live at the American Astronomical Society's 235th meeting in Honolulu, Hawai'i. We learned about new planets, black holes and star formation, but the big issue hanging over the whole conference is the protests and politics over the new Thirty Meter Telescope due for construction on Mauna Kea.

    • 29 min
    Ep. 553: What To Look Forward To In 2020

    Ep. 553: What To Look Forward To In 2020

    It's hard to believe it, but we survived another trip around the Sun. Now it's time to take the whole journey all over again, but with new news. Let's take a look at some of the space and astronomy stories we're looking forward to in 2020.

    • 41 min
    Ep. 552: Boyajian's star (and other strange stars)

    Ep. 552: Boyajian's star (and other strange stars)

    Huge surveys of the sky are finding more and more planets, stars and galaxies. But they're also turning up strange objects astronomers have never seen before, like Boyajian's star. Today we're going to talk about some unusual objects astronomers have discovered, and why this number is only going to go way way up.

    • 45 min
    CosmoQuest Hangoutathon Promo

    CosmoQuest Hangoutathon Promo

    Hi everyone, Producer Susie here. This weekend, December 21-23, 2019, we will be having our CosmoQuest Hangoutathon.  For 40 straight hours, our team will be bringing you guests, science and fun live on our channel. We are raising money to pay for our team to continue to bring you science, and for us to continue our citizen science programs, like the extremely successful Bennu Mappers from this past year, where over 3500 of you wonderful volunteers mapped over 14 million rocks on the asteroid Bennu, looking for a safe place for the OSIRIS-REx mission to grab samples to return to earth.  We want to keep doing projects like this - and we need your help to continue doing the science.  Please join us at starting 9am EST / 6am PST / 1400UTC. If you can’t tune in live, you can catch the replays on Twitch, and we’ll be trying our best to archive all of the content on YouTube after this weekend. We’re accepting donations at As part of the Planetary Science Institute, we are a 501c3 non-profit, so all of your donations are tax deductible where the law allows.  Please watch, share and donate if you can, so we can keep bringing the science to you! Thank you for listening!

    • 1 min
    Ep. 551: Missing Epochs - Observing before the CMBR

    Ep. 551: Missing Epochs - Observing before the CMBR

    The Cosmic Microwave Background Radiation is the earliest moment in the Universe that we can see with our telescopes, just a few hundred thousand years after the Big Bang itself. What will it take for us to be able to fill in the missing gap? To see closer to the beginning of time itself?

    • 27 min

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