Archive | Planetary Science

Ep. 505: Seismology

We’re always interested in the surface features of the planets and moons in the Solar System, but that’s only skin deep. It turns out, these worlds have an interesting inner life too. Thanks to the science of seismology, we can peer into our planet and learn how it works… inside. And we’re about to take […]

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Ep. 504: Radar, Lidar, and Sonar

To really study something, you want to reach out and touch it. But what can you do if you’re separated by a huge distance? You reach out with electromagnetic or sound waves and watch how they bounce back. Thanks to radar, sonar and lidar. We usually record Astronomy Cast every Friday at 3:00 pm EDT […]

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Ep. 501: Water Worlds Revisited

We’re not learning that the vast majority of potentially habitable worlds out there are actually icy moons like Europa and Enceladus. Good news, there are hundreds, if not thousands of times more of them than worlds like Earth. Bad news, they’re locked in ice. What have we learned about water worlds and their potential for […]

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AC497

Ep. 497: Update on Globular Clusters

Is it globular clusters or is it globeular clusters? It doesn’t matter, they’re awesome and we’re here to update you on them. Astronomy Cast will be celebrating their 500th episode the weekend of Sept 15-16, 2018. Want to join us in Edwardsville, Il? Check out our AC500 site here to find out how! We usually […]

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Ep. 495: Update on Asteroids & Prospects of Asteroid Mining

Our knowledge of space is starting to match up with our ability to get out there an explore it. There are several companies working on missions and techniques to harvest minerals from asteroids. What other resources are out there that we can use? Astronomy Cast will be celebrating their 500th episode the weekend of Sept […]

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Ep. 494: Icy Moons Update 2018

Thanks to Cassini and other spacecraft, we’ve learned a tremendous amount about the icy worlds in the Solar System, from Jupiter’s Europa to Saturn’s Enceladus, to Pluto’s Charon. Geysers, food for bacteria, potential oceans under the ice and more. What new things have we learned about these places? This episode was recorded on Thursday, 5/31/2018. […]

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Ep 491: Exoplanet Update 2018

Finally, a big update. Have there been news in the realm of exoplanets? More news that we can possibly cover. But we’ll try our best. We usually record Astronomy Cast every Friday at 3:00 pm EDT / 12:00 pm PDT / 19:00 UTC. You can watch us live on here on AstronomyCast.com, or the AstronomyCast […]

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Ep. 476: The Overview Effect

After they’ve been to space, many astronauts report that seeing the world from above has given them a totally new perspective on humanity and the state of our planet. It’s called the Overview Effect. Today we’ll talk about this, and what this perspective can teach us all. We usually record Astronomy Cast every Friday at […]

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Ep. 474: Predictions for 2018

Join us at a special date/time for this episode! Pamela’s traveling so we’re recording this on Saturday, 1/6/2018, at 2 pm EST / 11 am PST / 19:00 UTC! Phew, 2018, time to press the reset button and enjoy a whole new year of space exploration and space science. What’s coming up this year? What […]

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Ep. 473: Remembering the Best Space Science of 2017

2017 was a crazy year for, well, you know. But, it was a great year for space science, a kilonova, extrasolar planets, reusable rockets and more. Let’s look back at the year that was and remember our favorite space science. We usually record Astronomy Cast every Friday at 3:00 pm EST / 12:00 pm PST […]

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