The valley of forgetability (The Core) between science-respecting sci-fi (e.g. Arrival) and totally bonkers nonsense (e.g. Jupiter Ascending).
Landing the “flying brick.”
Magnetite beaks. The possibility of quantum eyeball magnetic navigation HUDs. Corvid appreciation. Why birds don’t all fly into our windows and our eyeballs.
Keeping your heart on-rhythm. Not as immediate a death sentence as portrayed.
Earth’s outer core
The absurd energies in the spinning of Earth’s core - a ball of iron the size of Mars, spinning a thousand miles an hour
That’s a whole lot of energy. If it doesn’t sound like much, let’s convert it to megatons: it’s the equivalent energy of five trillion one megaton bombs going off.
Phil Plait on the spinning outer core
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Phil Plait's Bad Astronomy Review of The Core: BadAstronomy.com