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Astronomy Cast

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Apr 24, 2023

Astronomy Cast Ep. 678: World Building: Planet Formation, Growth & Ejection

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 17, 2023.

Okay sci-fi writers, today we’re going to give you a guided tour of building planets. How they form, how they grow, and how things can go horribly horribly wrong.

[Editor’s Note:...


Apr 17, 2023

Astronomy Cast Ep. 677: The Answer is Always Dust

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 10, 2023.

Whenever astronomers discover something surprising, the answer often turns out to be dust. Dust obscuring our view, dust changing the polarity, dust warming things up, dust cooling things down. It’s always...


Apr 10, 2023

Astronomy Cast Ep. 676: Other Things With Rings

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 3, 2023.

We’ve spent a lot of time gushing about Saturn’s rings, but there are other places with ring systems. And not just Jupiter and the ice giants, but asteroids, dwarf planets, centaurs and even exoplanets....


Apr 3, 2023

Astronomy Cast Ep. 675: Exotic Forms of Ice

by Fraser Cain & Dr. Pamela Gay

Ice is ice, right? You know, what you get when water freezes. Well, maybe here on Earth. But across the Universe, water can be squeezed together at different temperatures and pressures, leading to very different structures. Today we’ll talk...