Podcasts


Ep. 546: Weird Issues: Planetary Migration

Posted by on 4:53 pm in Extrasolar Planets, Planets, podcast | 0 comments

Before we discovered other planets, our Solar System seemed like a perfectly reasonable template for everywhere. But now we see massive planets close to their stars, which leads you to the question, how does it all get there. Do the planets form in place or do they migrate around?

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Ep. 545: Weird Issues: Are comets asteroids or are asteroids comets?

Posted by on 8:54 pm in Astronomy, Interplanetary Bodies, podcast | 0 comments

Ep. 545: Weird Issues: Are comets asteroids or are asteroids comets?

Things used to be so simple. Comets were snowballs from the outer Solar System, and asteroids were rocks from the inner Solar System. But now everything’s all shades of grey. Astronomers have found asteroids that behave like comets and comets that behave like asteroids.

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Ep. 544: Weird Issues: Biosignatures

Posted by on 9:28 pm in Chemistry, Planetary Science, Planets, podcast | 0 comments

Ep. 544: Weird Issues: Biosignatures

Once again, another place where the Universe is going to make this difficult for us. Proving, once and for all that there’s alien life on another world. It should be straightforward, look for biosignatures, but it looks like there are natural sources that could explain almost any chemical we could hope to search for.

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Ep. 543: Weird Issues: The Habitable Zone

Posted by on 6:48 pm in Cosmology, Exoplanets, podcast, Solar System | 0 comments

Ep. 543: Weird Issues: The Habitable Zone

Our series on Universe weirdness marches on. This week we take a look at the habitable zone, and how things aren’t as simple as we thought.

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Ep. 542: Weird Issues: The Age of the Universe

Posted by on 8:06 pm in Cosmology, podcast | 0 comments

Ep. 542: Weird Issues: The Age of the Universe

Our series on Universe weirdness continues, this time we learn how astronomers are struggling to make sense of the age of the Universe.

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Ep. 541: Weird Issues: The Expansion Rate of the Universe

Posted by on 5:11 pm in Cosmology, podcast | 0 comments

Ep. 541: Weird Issues: The Expansion Rate of the Universe

Just when the Universe was starting to make sense, the cosmos throws a curveball at us. Astronomers have been trying to accurately measure the expansion rate of the Universe as far back as Hubble. It’s been tough to nail down, and now astronomers are starting to figure out why.

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Ep. 540: Weird Issues: How Do (or Don’t) Planets Form?

Posted by on 5:07 pm in Extrasolar Planets, Our Solar System, Physics, Planetary Science, Planets, podcast | 0 comments

Ep. 540: Weird Issues: How Do (or Don’t) Planets Form?

As astronomers started to discover planets orbiting other stars, they immediately realized that their expectations would need to be tossed out. Hot jupiters? Pulsars with planets? We’re now decades into this task, and the Universe is continuing to surprise us.

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Ep. 539: Weird Issues: Why We Don’t Know the Age of Saturn’s Rings

Posted by on 4:46 pm in Our Solar System, Planetary Science, podcast, Solar System | 0 comments

Ep. 539: Weird Issues: Why We Don’t Know the Age of Saturn’s Rings

How old are Saturn’s rings? They could be brand new, or they could be as ancient as the Solar System itself. Planetary scientists thought they knew the answer thanks to new data from Cassini, but new ideas are calling even that into question.

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Ep. 538: Asteroids: Rubble piles of the Solar System

Posted by on 6:26 pm in Astronomy, Our Solar System, Planetary Science, podcast | 0 comments

Ep. 538: Asteroids: Rubble piles of the Solar System

Thanks to all the work from Hayabusa 2 and OSIRIS-REx, astronomers are getting a much better look at the smaller asteroids in the Solar System. It turns out, they’re piles of  rubble… but fascinating piles of rubble. Let’s talk about what we’ve learned so far.

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Ep. 537: Reusable Rocket Revolution

Posted by on 5:37 pm in podcast, Spacecraft | 0 comments

Ep. 537: Reusable Rocket Revolution

We took a hiatus this summer, but SpaceX sure didn’t, with the tests of the Starhopper prototype. Today we’re going to talk about the revolution in reusable rocketry and quest to build a fully reusable two-stage rocket.

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