Tuesday, 1 September 2020

How long is a galactic year?

How long is a galactic year?

Humans are used to keeping time by measuring Earth's movement relative to the sun. But while Earth's trips around its star are noteworthy to life on our pale blue dot, that journey is pretty insignificant when compared with the epic voyage that carries the sun — and our entire solar system — around the center of the Milky Way.

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