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Nov 2023
6m 52s

What are planets made of?

American Public Media
About this episode
We spend a lot of time on top of our planet, but we don’t spend much time inside it. So it makes sense you might wonder what our planet is made of, deep deep down. Is it more rocks? Is it lava? Is it a gooey caramel center? And what about the other planets, like Mars and Jupiter? We asked astronomer Mark Popinchalk to help us find the answer. Got a question ... Show More
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