View Single Post
jostpuur
#1
Aug22-08, 03:09 PM
P: 2,066
When things are kept at the simplest, I've heard that galaxies were formed because gravity pulls stuff together, but there's some things that are not fully making sense. If two objects are far away, and they get attracted by gravity, what happens is that they merely pass each others with some great velocity and fly far away again, according to the conservation of energy. So what is it really that makes clusters start forming out of homogeneous matter then?
Phys.Org News Partner Space news on Phys.org
Mysteries of space dust revealed
A guide to the 2014 Neptune opposition season
Thermonuclear X-ray bursts on neutron stars set speed record