Archive | Our Solar System

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. 493: Mars Update 2018

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? We usually record Astronomy Cast every Friday at 3:00 […]

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Ep. 464: Why the Hype over an Exorock?

Astronomers this week announced that they had discovered an asteroid or comet on a trajectory that brought it from outside the Solar System? Is this the first case of an object from deep space? And what can we learn from this discovery? We usually record Astronomy Cast every Friday at 12:00 pm PDT / 3:00 […]

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Ep. 460: Earth from Afar: Remote Sensing

The space age has given us the ability to look at every corner of the globe in every wavelength. It’s revolutionized our ability to predict the weather, keep track of environmental damage, and watch the world change. Today we look at what missions and technologies give us the ability to watch our world from afar. […]

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Ep. 456: Pluto Revisited

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. 448: Prepping for the Eclipse

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

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

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!

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?

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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