289.1. Snippet_E=mc squared (formula)
It’s about massive energy and energetic mass.
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Astronomy Without A Telescope
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Category Physics and astrophysics
288.2. Snippet_Planets around black holes
Possible worlds, though not likely ones.
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287.1. Snippet_Observational horizons
The edges of the knowable.
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286. Fantastic Physics Formulas – Episode 7
Falling, as little as possible.
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