Click on the image above to enlarge or download ultra-high definition version from here
Click on the image above to enlarge or download ultra-high definition version from here
According to astronomers—those lovely crazy people working in offices with the best views—the speed is so high that, that the galaxies rip apart the intercluster medium. This is a really thin gas but, when the galaxies race through it, it can cause enough pressure to push the galaxies internal material into the cluster itself.
I don’t know about you, but watching these I feel terribly small. Like Mark just said: “That’s where God’s God lives.” [Discover]