At what speed does the Milky Way galaxy as a whole travel through the vastness of space?

The Milky Way as a whole travels at a speed of around 600 kilometers per second in extragalactic frames of reference. The Milky Way's earliest stars are almost as ancient as the Universe itself, formed just after the Big Bang's Dark Ages.

Asked by Vasilii Kulev · Last updated 4 years ago · 1K views · SOURCE