Archive | Planets

Ep. 456: Pluto Revisited

By susie on September 8, 2017 in Astronomy, Our Solar System, Planetary Science, Planets

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. We usually record Astronomy Cast every Friday at 1:00 pm PDT / 4:00 pm EDT/ […]

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

By susie on August 28, 2017 in Planetary Science, Planets

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! We usually record Astronomy Cast every Friday at 1:30 pm PDT / 4:30 pm EDT/ 20:30 PM UTC (8:30 GMT). You can watch us […]

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Ep. 448: Prepping for the Eclipse

By susie on April 28, 2017 in Astronomy, Our Solar System, Sky Phenomena, Stars

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. We usually record Astronomy Cast […]

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

By susie on March 7, 2017 in Physics, Planetary Science, Planets

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. We usually record Astronomy Cast every Friday […]

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

By susie on February 27, 2017 in Forces, Our Solar System, Physics, Planets

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? We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern […]

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

By susie on February 21, 2017 in Our Solar System, Physics, Planets

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. We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern / 21:30 PM UTC […]

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

By susie on February 14, 2017 in Our Solar System, Physics, Planets

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. We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern / 21:30 PM UTC (9:30 […]

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

By susie on February 6, 2017 in Our Solar System, Physics, Planetary Science

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? We usually record Astronomy Cast every Friday at 1:30 pm Pacific […]

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

By susie on January 31, 2017 in Our Solar System, Physics, Planetary Science, Planets

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? We usually record Astronomy Cast every […]

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Ep. 434: Am I On An Alien World?

By susie on January 3, 2017 in Astronomy, Planets

Once again, science fiction television and movies has let you down. They try to recreate what it might be like on an alien world, but surprise surprise, they mostly get it wrong. That’s because a truly alien world would be different in so many ways, it would blow your mind. Today we’ll help you figure […]

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