Science
How long is a galactic year? – Live Science
The galaxy is a big place, after all.
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.
Orbiting the Milky Way galaxy just once takes the sun approximately 220 million to 230 million Earth
years, according to Keith Hawkins, an assistant professor of astrono…
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