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Astronomy Cast

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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. 457: Why Did Cassini Have To Die? In Memoriam

9/18/2017
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It's time to say goodbye to an old friend, NASA's Cassini spacecraft, which has been orbiting within the Saturnian system since 2004. But why does a seemingly healthy spacecraft and mission need to come to an end? Today we look back at the mission, some of the amazing discoveries, and why its finale was necessary.

Duration: 00:29:22


Ep. 456: Pluto Revisited

9/11/2017
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This week, we return to our starting point, where Astronomy Cast began: Pluto. 11 years on, we have a whole new appreciate for the dwarf planet Pluto. We’ve visited it, probed it and taken pictures. It’s time for an update.

Duration: 00:33:53


Ep. 455: Your Practical Guide to Colonizing the Milky Way!

8/28/2017
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This episode was recorded live in St. Louis, MO at the Astronomy Cast Solar Eclipse Escape 2017. Listen as we discuss how humans might be able to colonize the Milky Way!

Duration: 00:32:14


Astronomy Cast Extra: Solar Eclipse 101

8/21/2017
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This episode was recorded live in St. Louis, MO at the Astronomy Cast Solar Eclipse Escape 2017. We're going to give you a set of last minute tips and info to prepare for the Great American Eclipse!

Duration: 00:31:24


Ep. 454: Things We're Looking Forward To

6/19/2017
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As we wrap up season 10 of Astronomy Cast, we look forward to all the instruments, missions and science results on the distant horizon. Think astronomy is exciting already? Just you wait.

Duration: 00:34:50


Ep. 452: Summer Observing Challenges

6/5/2017
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Summer is almost here, and for the northern hemisphere, that means warm nights for observing. But what to observe? We're here with a list of events and targets for you to enjoy over the summer. Get your calendars handy, and start organizing some events with your friends, and then get out there!

Duration: 00:29:40


Ep. 451: When Can I Buy My Ticket To Space?

5/29/2017
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Like most of us, you probably want to know what it would be like to travel to space. Maybe not to live, but just to visit. You want to be a space tourist. Good news, there are a bunch of companies working hard to give you the opportunity to fly to space. How long until you can buy a ticket?

Duration: 00:26:46


Ep. 450: Inflatable Habitats

5/21/2017
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In order to live in space, we'll need to live in a habitat that simulates the temperature, pressure and atmosphere of Earth. And one of the most interesting ideas for how to do this will be with inflatable habitats. In fact, there are a few habitats in the works right now, including one attached to the International Space Station.

Duration: 00:27:46


Ep. 449: Robots in Space!

5/8/2017
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When you think of a robot, you’re probably imagining some kind of human-shaped machine. And until now, the robotic spacecraft we’ve sent out into space to help us explore the Solar System look nothing like that. But that vision of robots is coming back, thanks to a few new robots in development by NASA and other groups.

Duration: 00:26:42


Ep. 448: Prepping for the Eclipse

5/1/2017
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On Monday, August 21, 2017, there’s going to be a total eclipse of the Sun, visible to path that goes right through the middle of the United States. You should be making plans to see this, and we’re here to help you know where to go and what to do.

Duration: 00:29:23


Ep. 447: Animals in Space Pt. 3: Dogs, Monkeys and More

4/24/2017
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For the final episode in our 3-part episode about animals in space, we look at the largest animals to go to orbit. And I’ll just warn you now, this is going to be a really sad episode.

Duration: 00:28:41


Ep. 446: Animals in Space Pt. 2: Mice and Other Small Animals

4/17/2017
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Last week we talked about how the smallest creatures behave in space, but now we move up in size a little to small animals, like mice. What missions have they flown on, and how does microgravity affect their biology?

Duration: 00:30:57


Ep. 445: Animals in Space Pt. 1: Insects and Arachnids

4/10/2017
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We've talked about animals traveling to space in the past, but it's time to take another look, with many other creatures making the trip to the void. Today we're going to talk about the spineless insects and arthropods, and those tough as nails waterbears – tardigrades.

Duration: 00:28:18


Ep. 444: Fractals

4/3/2017
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For this historic 444th episode of Astronomy Cast, we talk about fractals. Those amazing mathematical visualizations of recursive algorithms. What are they, how do you get them? Why are they important?

Duration: 00:27:48


Ep. 443: Destroy and Rebuild Pt. 7: Tsunamis

3/13/2017
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Surf’s up! Today we’re going to be talking about one of the most devastating natural disasters out there: tsunamis. We’re talking huge waves that wreck the seashore. But it turns out, there many ways you can get a tsunami, and one of those has to do with space.

Duration: 00:30:28


Ep. 442: Destroy and Rebuild Pt. 6: Magnetic Pole Reversal

3/6/2017
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If we look back into the geologic record of the Earth, it appears that our planet’s magnetic field flips polarity every few hundred thousand years or so. Why does this happen? When’s it supposed to happen next? Is it dangerous?

Duration: 00:29:12


Ep. 441: Destroy and Rebuild, Pt. 5: Continental Drift

2/27/2017
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Want to travel the world but you don’t have a lot of money? No problem, your continent is drifting across the surface of the Earth right now. In a few million years, you’ll reach your destination.

Duration: 00:26:11


Ep. 440: Destroy and Rebuild, Pt. 4: Supervolcanoes!

2/20/2017
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There are regular volcanoes, and then there are the supervolcanoes. Massive calderas of hot magma of incomprehensible size. Bad news, these things explode randomly and catastrophically. Worse news, there are a bunch around the Earth.

Duration: 00:31:33


Ep. 439: Destroy and Rebuild, Pt. 3: How Do We Terraform Earth?

2/14/2017
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We always want to talk about how we can make Mars more Earth like, but the reality is that we’re making Earth more Venus-Like. We’re Venusforming Earth. What are the various factors we’re impacting on a global scale, and how can we fix them?

Duration: 00:30:45


Ep. 438: Destroy and Rebuild, Pt. 2: Geoengineering

2/6/2017
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We know humans are having an impact on planet Earth, but what if we really put our backs into it, and intentionally tried to change the entire planet? Either to make it better, or to fix some terrible mistake we've made. The technique is called geoengineering. Could it work?

Duration: 00:31:51

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