Category: Cosmology
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Teach the Controversy About…Dark Matter?
(If you’re not a cosmologist or astrophysicist, you may need a bit of background before I get to the main point. If you already know all this stuff, good on yer–skip down a few paragraphs.) One of the big mysteries remaining in our current understanding of the universe is “dark matter”—apparently a type of matter…
Galileo's Pendulum 