Astronomy Cast Full Raw Feed

This is the full live stream audio of the Astronomy Cast episodes. The first half hour is the regular episode, and the second half hour is a Q&A session with questions submitted by live viewers and email.

Ep. 742: Atmospheric Gravity Waves 02/03/2025

Ep. 742: Atmospheric Gravity Waves Streamed live on Jan 27, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay Gravity Waves ... not gravitational waves ... move atmospheres and make pretty clouds. Have you ever looked up into the sky and seen bizarre cloud formations that look like waves on the ocean? These are gravity waves. Not to be confused with gravitational waves, and they’re caused by a balance of buoyancy and gravity. And of course these have been seen across the solar system. SUPPORTED BY YOU This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be listed in our YouTube videos. Thanks to: Andrew Poelstra, BogieNet, Brian Cagle, David, David Truog, Ed, Gerhard, Schwarzer, Jeanette Wink, Siggi Kemmler, Stephen Veit /episode/index/show/astro52/id/35120270

Ep. 741: Technosignatures 01/27/2025

Ep. 741: Technosignatures Streamed live on Jan 20, 2025. Pollution will ultimately give away a society. SUPPORTED BY YOU This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be listed in our YouTube videos. Thanks to: Andrew Poelstra, BogieNet, Brian Cagle, David, David Truog, Ed, Gerhard, Schwarzer, Jeanette Wink, Siggi Kemmler, Stephen Veit /episode/index/show/astro52/id/35002345

Ep. 740: Sneaky Stars! 01/20/2025

Ep. 740: Sneaky Stars! Streamed live on Jan 13, 2025. Why stars can’t be trusted! If you’re an astronomer you depend on accurate observations of stars, but there’s a problem. Stars are sneaky! Changing in size, brightness, color, they hide their chemistry, their age and even their companions from all but the cleverest observers. Stars explode precisely when they intend to. Betelgeuse took a brightness plunge, T CrB refused to go nova, and other failures to be predictable irk observers for good reasons. Let's talk about it. /episode/index/show/astro52/id/34915740

Ep. 739: Drones! 01/13/2025

Ep. 739: Drones! Streamed live January 9, 2025. From little Ingenuity to the future Firefly and all our Earth Science fliers, let's look at the buzzy scientists. NASA’s Mars Ingenuity helicopter showed us how wonderful a flying science platform can be on another world. Soon there’ll be a helicopter flying on Titan, but there are many other flying robots that’ll be helping us with all our science needs. /episode/index/show/astro52/id/34819270

Ep. 738: Looking Ahead to 2025 12/23/2024

Ep. 738: Looking Ahead to 2025 What can we hope (or dread) to see in 2025? Last week we talked about the 2024 strangeness. Now we’re gonna talk about the upcoming space stories for 2025 that we’re looking forward to. It’s a nice mix of new rockets, new missions and new fly-bys. Hosted by: Fraser Cain and Dr. Pamela L. Gay /episode/index/show/astro52/id/34543730

Ep. 737: Weird Science Stories From 2024 12/16/2024

Ep. 737: Weird Science Stories From 2024 Streamed live December13, 2024. Hosted by: Fraser Cain and Dr. Pamela L. Gay. 2024 was a strange year! I’ll let your imagination take flight and consider how 2024 was weird for you. But, for space and astronomy we had some interesting, revolutionary, unsettling and downright weird stories pop up. Today let’s talk about them. /episode/index/show/astro52/id/34463865

Ep. 736: Gift Guide 2024 12/09/2024

Ep. 736: Gift Guide 2024 Streamed live on Dec 2, 2024 Hosted by: Fraser Cain and Dr. Pamela L. Gay It’s time for our Holiday Gift Guide, where we suggest ideas for presents for the space fans in your life! What books are we reading? What games are we playing and what telescopes are we admiring? SUPPORTED BY YOU !!! This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be listed in our YouTube videos. Thanks to: Andrew Poelstra, BogieNet, Brian Cagle, David, David Truog, Ed, Gerhard, Schwarzer, Jeanette Wink, Siggi Kemmler, Stephen Veit /episode/index/show/astro52/id/34330660

Ep. 735: Albert Einstein 12/02/2024

Ep. 735: Albert Einstein Streamed live on Nov 25, 2024. Last week we talked about the Einstein probe. So this week it is only natural that we talk about the man himself, Albert Einstein. He revolutionized the field of physics, played a vital role in the early 20th century and struggled to unite the forces of the Universe at the end of his career. Hosted by: Fraser Cain and Dr. Pamela L. Gay SUPPORTED BY YOU! This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be listed in our YouTube videos. Thanks to: Andrew Poelstra, BogieNet, Brian Cagle, David, David Truog, Ed, Gerhard Schwarzer, Jeanette Wink, Siggi Kemmler, Stephen Veit! /episode/index/show/astro52/id/34221920

Ep. 734: The Einstein Mission 11/18/2024

Ep. 734: The Einstein Mission Streamed live on Nov 11, 2024. Hosted by: Fraser Cain and Dr. Pamela L. Gay. Another day, another space telescope! Today we’re looking at the newly launched Einstein Probe. A collaboration between the Chinese Space Agency and the European Space Agency. The mission has been operating since January searching the cosmos for short, bright flashes of X-rays. SUPPORTED BY YOU This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be listed in our YouTube videos. Thanks to: Andrew Poelstra, BogieNet, Brian Cagle, David, David Truog, Ed, Gerhard, Schwarzer, Jeanette Wink, Siggi Kemmler, Stephen Veit /episode/index/show/astro52/id/33952502

Ep. 733: Euclid Of Alexandria 11/11/2024

Ep. 733: Euclid Of Alexandria Streamed live on Nov 5, 2024. Last week we talked about the mission. This week we’ll talk about Euclid of Alexandria, the ancient Greek mathematician who inspired the mission. Let’s learn about his life and the ground breaking work that made so much of our modern mathematics possible. Hosted by: Fraser Cain and Dr. Pamela L. Gay. /episode/index/show/astro52/id/33876592

Ep. 732: The Euclid Telescope 11/04/2024

Ep. 732: The Euclid Telescope Let's look at the Euclid Space Telescope. The Euclid 208-Gigapixel image! /episode/index/show/astro52/id/33758842

Ep. 731: Neil Gehrels 10/28/2024

Ep. 731: Neil Gehrels Streamed live on Oct 21, 2024. Let's look at the man whose name is carried by the Neil Gehrels Swift Telescope. Hosted by: Fraser Cain and Dr. Pamela L. Gay. /episode/index/show/astro52/id/33594157

Ep. 730: The Neil Gehrels Swift Telescope 10/21/2024

Ep. 730: The Neil Gehrels Swift Telescope Streamed live October 15, 2024. Let's look over the long life of the Neil Gehrels Swift Telescope as it watches for the multi-spectral flashes of high energy explosions. /episode/index/show/astro52/id/33538982

Ep. 729: The James Webb Space Telescope 10/07/2024

Ep. 729: The James Webb Space Telescope Streamed live on Sep 30, 2024. Let's talk about that giant telescope that's changing everything. We have been waiting our entire careers to make this episode on the James Webb Space Telescope, AKA the JWST. This historic Observatory was launched just a couple of years ago and it's already overturning our understanding of the early Universe star formation and exoplanets! /episode/index/show/astro52/id/33343342

Ep. 728: Solar Scientist Eugene Parker 09/30/2024

Ep. 728: Solar Scientist Eugene Parker Streamed live on Sep 23, 2024. Last week, we talked about the Parker Solar Probe. As always, we like to talk about the person who inspired the mission. What makes this amazing and different is that Eugene Parker was there to watch the launch of the mission that shares his name. Why is he so influential on solar astronomy? /episode/index/show/astro52/id/33225782

Ep. 727: Parker Solar Probe 09/23/2024

Ep. 727: Parker Solar Probe Streamed live on Sep 16, 2024. Let's look over the long life of the Parker Solar Probe as it explores the Sun and nearby worlds. The Sun! It’s that ongoing thermonuclear explosion that’s happening right over there! And although the Sun is necessary for life on Earth, we still have questions! So NASA has sent the Parker Solar Probe to visit the Sun up close, to get us some answers. /episode/index/show/astro52/id/33162442

Ep. 726: Looking Back Over The Summer 09/16/2024

Ep. 726: Looking Back Over The Summer Streamed live Sep 9, 2024. We made all sorts of predictions, and some of the stuff we didn't know about last July, somehow, we still don't know about as we set up this episode on September 3! Join us for the first episode of Season 18 as we review all the crazy space science that happened during our Summer Hiatus. /episode/index/show/astro52/id/33065552

Ep. 725: Looking Ahead 07/01/2024

Ep. 725: Looking Ahead Streamed live on Jun 24, 2024. Normally Pamela refuses to think about the future. But today, on our final episode before hiatus, she’s throwing out those rules. It’s like the PURGE! Here’s what we’re excited about for the future. Especially for the next couple of months until we return in September. /episode/index/show/astro52/id/31949597

Ep. 724: Summer (Science & Sci Fi) Reads 06/24/2024

Ep. 724: Summer (Science & Sci Fi) Reads Streamed live Jun 20, 2024. Fraser & Pamela list their favorite books! Take notes! I also have a favor to ask - I'm working on a research project with my collaborator Sanlyn Buxener on what factors help and hinder people learning and doing science. Can you please take our survey? THANK YOU! - Pamela /episode/index/show/astro52/id/31851327

Ep. 723: Exoplanets by the Numbers 06/17/2024

Ep. 723: Exoplanets by the Numbers Streamed live on Jun 10, 2024. Astronomers have discovered thousands of exoplanets, revealing entirely new types of worlds that we just don’t have in the solar system. It’s enough to start getting a rough sense of what kinds of planets are out there. What’s the big picture? /episode/index/show/astro52/id/31743972

Ep. 722: Weather on Exoplanets 06/10/2024

Ep. 722: Weather on Exoplanets Here’s a familiar question: How’s the weather? We’re familiar with the weather on Earth and telescopes and missions are watching the weather on other planets in the Solar System. But for the first time in history, astronomers can now answer that question for exoplanets, located light-years away from us. /episode/index/show/astro52/id/31659277

Ep. 721: Rogue Planets 05/27/2024

Ep. 721: Rogue Planets Most of the exoplanets we’ve found are around stars, where they belong. But a few have been found free-floating in interstellar space. The evidence is growing that there are a lot of them out there, maybe even more than planets with stars. How do they form and how can we learn more about them? /episode/index/show/astro52/id/31467162

Ep. 720: Galaxy Series - Elliptical Galaxies 05/20/2024

Ep. 720: Galaxy Series - Elliptical Galaxies Streamed live on Apr 30, 2024. Our galaxy series continues with elliptical galaxies. Unlike other types, these are large, smooth with very few distinguishing features. They’re filled with red and dead stars, a clue to their evolution. /episode/index/show/astro52/id/31345447

Ep. 719: Galaxy Series - Spiral Galaxies 05/13/2024

Ep. 719: Galaxy Series - Spiral Galaxies Our galaxy series continues, on to spiral galaxies. In fact, you’re living in one right now, but telescopes show us the various shapes and sizes these galaxies come in. Thanks to JWST, we’re learning how these spirals got big, early on in the Universe. /episode/index/show/astro52/id/31257287

Ep. 718: Galaxy Series - Dwarf Galaxies 05/06/2024

Ep. 718: Galaxy Series - Dwarf Galaxies Streamed live on Apr 30, 2024. It’s time to begin a new mini-series, where we’ll look at different classes of galaxies. Today, we’ll start with the dwarf galaxies, which flock around larger galaxies like the Milky Way. Are they the building blocks for modern structures? /episode/index/show/astro52/id/31138998

Ep. 717: Understanding the Ages of Distant Cosmic Objects 04/29/2024

Ep. 717: Understanding the Ages of Distant Cosmic Objects How old is that star? That planet? That nebula? Figuring out the ages of astronomical objects is surprisingly challenging. Fortunately, astronomers have developed a series of techniques they can use to work out the ages of stuff. /episode/index/show/astro52/id/31020308

Ep. 716 - The God**** Particle - Remembering Peter Higgs 04/22/2024

Ep. 716 - The God**** Particle - Remembering Peter Higgs Last week, we learned about the death of Peter Higgs, a physicist and discoverer of the particle that bears his name. The Large Hadron Collider was built to find and describe the particle. Today, we’ll look back at the life of Peter Higgs and his particle. /episode/index/show/astro52/id/30922873

Ep. 715: Total Eclipse of the Science: Experiments During the Eclipse 04/08/2024

Ep. 715: Total Eclipse of the Science: Experiments During the Eclipse How to watch a solar eclipse and do some science! The next great eclipse is upon us, with viewers across North America witnessing the moon passing in front of the Sun. It’s an amazing experience, but also an opportunity to do science. Let’s talk about what we can learn from this momentous event. /episode/index/show/astro52/id/30654583

Ep. 714: Orbital Resonances 04/01/2024

Ep. 714: Orbital Resonances Several of the planets and moons in the Solar System are in orbital resonance, orbiting in a geometric lockstep. And not just the Solar System, astronomers have found the same resonances in other star systems. /episode/index/show/astro52/id/30592303

Ep. 713: Solar System Volcanoes 03/25/2024

Ep. 713: Solar System Volcanoes Last week was one of the most exciting meetings we’ve seen from the Lunar and Planetary Science Conference, with hundreds of announcements and discoveries from various missions. One theme kept coming up, the Solar System is more volcanically active than we thought. Today, we’ll explore volcanism on other worlds. /episode/index/show/astro52/id/30513788

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