Sentences with phrase «galactic clusters collided»
The ring may have been formed when two galactic clusters collided.
http://discovermagazine.com/ Not exact matches
A prior study suggested that CL 0024 +17 had collided with another galactic cluster one billion to two billion years ago.
GALACTIC QUARTET The way invisible dark matter warped the light from distant galaxies, shown here as the swirl of material surrounding four giant galaxies in cluster Abell 3827 (seen in this Hubble Space Telescope photograph), suggested that dark matter can separate from stars when galaxies collide.