In all honesty, I didn't even think to ask physics professor Patrick Johnson about that crazy floating space iceberg we see in The Rise of Skywalker's final trailer, but when he brought it up during our conversation, I realized I had to pursue the subject. So as we talk about that iceberg, we also wind up talking about the composition of asteroids, how the tails of comets behave, the temperature of the universe, rogue planets, and more. Punch it!
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