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Astronomy Cast takes a fact based journey through the cosmos as it offers listeners weekly discussions on astronomical topics ranging from planets to cosmology.

Astronomy Cast takes a fact based journey through the cosmos as it offers listeners weekly discussions on astronomical topics ranging from planets to cosmology.
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Location:

United States

Description:

Astronomy Cast takes a fact based journey through the cosmos as it offers listeners weekly discussions on astronomical topics ranging from planets to cosmology.

Language:

English


Episodes

Ep. 509: Fiction to Fact: 3D Printers

12/10/2018
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The technology of 3D printing is taking off. From tiny home-based 3D printers to larger manufacturing. And of course, 3D printing is going to space with the International Space Station and beyond.

Duration:00:29:20

Ep. 508: 2018 Holiday Gift Guide

12/3/2018
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We did it, we made it to the end of another year. Once again it’s time to wonder what gifts to get your beloved space nerds. We’ve got some suggestions. Some are brand new this year, others are classics that we just can’t help but continue to suggest.

Duration:00:30:32

Ep. 507: From Fiction to Fact : Ion Drive

11/27/2018
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Ion engines are a mainstay of science fiction, featured in both Star Trek and Wars. But this is a very real technology, successfully used on several missions out there in the Solar System right now. How do they work and what are the limits?

Duration:00:31:35

Ep. 506: It's not Aliens, Unless it's Aliens

11/18/2018
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Did you hear that astronomers from Harvard think that the interstellar asteroid Oumuamua was actually an alien solar sail? Is it aliens? Of course it's not aliens. But some day, it'll actually be aliens.

Duration:00:30:11

Ep. 505: Seismology

11/12/2018
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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 that technology to Mars.

Duration:00:27:54

Ep. 504: Radar, Lidar, and Sonar

11/5/2018
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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.

Duration:00:26:43

Ep. 503: Gravity Mapping

10/29/2018
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The Earth looks like a perfect sphere, but down here on the surface we see that there are mountains, rivers, oceans, glaciers, all kinds of features with different densities and shapes. Scientists can map this produce a highly detailed gravity map of our planet. And it turns out, this is very useful for other worlds too.

Duration:00:25:18

Ep. 502: No Touching: Determining Composition of Worlds Remotely

10/22/2018
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How do you know what something is made of if you can't reach out and touch it? How do we know what planets lights years away have in their atmosphere? What about the rocks all around Curiosity? Or the geysers coming out of Europa and Enceladus? Scientists have a few handy tricks.

Duration:00:26:43

Ep. 501: Water Worlds Revisited

10/8/2018
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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 habitability?

Duration:00:30:44

Ep. 500: Live Celebration!

9/17/2018
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Welcome to episode 500 of Astronomy Cast. To celebrate this momentous occasion, we’re going to look back 500 years into the past to see what we learned about the Universe. And then we’re going to look 500 years into the future.

Duration:01:06:18

Ep. 499: What is the proposed Hubble-Lemaitre Law?

9/10/2018
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We started out Astronomy Cast with the controversal decision to de-planet Pluto. And here we are, more than a decade later, at the brink of recording our 500th episode when another big decision is coming down from the IAU: whose name goes on the concept that our Universe is expanding: Hubble or Lemaître? It's a big deal and Pamela knows all about it.

Duration:00:32:05

Ep. 498: Dwarf Galaxy Update

7/1/2018
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The Milky Way has gobbled up dozens of dwarf galaxies and added them to its structure. Today we're going to look at the ongoing hunt for the wreckage of past mergers. And what we've discovered about dwarf galaxies in general.

Duration:00:29:24

Astronomy Cast: On Hiatus until September 2018

7/1/2018
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Astronomy Cast will be on hiatus for July and August. Don't worry, we'll be back in September, and will be gearing up for our 500th episode!

Duration:00:02:13

Ep. 497: Update on Globular Clusters

6/25/2018
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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.

Duration:00:30:38

Ep. 496: Update on Stellar Populations I, II, and III

6/18/2018
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Another update show, this time on the various generations of stars, let's get into it.

Duration:00:30:52

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

6/11/2018
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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?

Duration:00:30:32

Ep. 494: Icy Moons Update 2018

6/4/2018
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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?

Duration:00:27:22

Ep. 493: Mars Update 2018

5/28/2018
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If there's one place we've learned more about in the last 10 years, it's Mars. Thanks to all those rovers, orbiters, landers which are flying overhead, crawling around the surface, and digging into the rich Martian regolith. What have we learned about Elon Musk's future home?

Duration:00:28:53

Ep. 492: Comets, Asteroids and KBO's

5/21/2018
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Another topic with plenty of updates. Since we started Astronomy Cast we’ve visited many smaller objects in the Solar System up close, from Ceres and Vesta to Pluto, not to mention a comet. What have we learned?

Duration:00:29:52

Ep 491: Exoplanet Update 2018

5/14/2018
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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.

Duration:00:30:49