Milky Way Velocity: How Fast Does Our Galaxy Move?

[Angelika10]

Do we know at which speed the whole milky way is moving around in the universe?
Around the next cluster I suppose?

 

[Ibix]

About 600km/s with respect to observers who would see the cosmic microwave background as uniform.

With respect to other objects, I don't know off the top of my head. I would suspect googling specific objects (e.g. how fast is Andromeda moving) might be productive.

 

[Keith_McClary]

And how fast is the Milky Way Galaxy moving? The speed turns out to be an astounding 1.3 million miles per hour (2.1 million km/hr)! We are moving roughly in the direction on the sky that is defined by the constellations of Leo and Virgo. Although the reasons for this motion are not fully understood, astronomers believe that there is a huge concentration of matter in this direction. Some people call it The Great Attractor, although we now know that the pull is probably not due to one group of galaxies but many. Still the extra gravity in this direction pulls the Milky Way (and many neighbor galaxies) in that direction.

NASA