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Willbilly1221 t1_j27t7qi wrote

Reply to comment by Aseyhe in How fast does the Milky Way spin? How far does Earth move through space in a year? by Sabre-Tooth-Monkey

How fast is the Andromeda galaxy moving?

Edit: i realize I’m on reddit, not being smart ass, but i was wondering how we use those speeds to calculate how long until the milky way and andromeda collide. Thats why i was curious how fast is andromeda moving? Re-reading my initial question sounded sarcastic. Sorry i do that. Im autistic.

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Aseyhe t1_j28436b wrote

The Milky Way and Andromeda are moving toward each other at about 110 km/s, according to this article. They're expected to collide in about 4 billion years (keeping in mind that they accelerate as they approach).

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