A New Understanding Of The Galaxy?
ParadiseLost 03 Mar 2012
Currently, scientists believe that dark matter doesn't have much effect on the surrounding environment other than through its gravitational pull. In other words, if two galaxies collide, the dark matter from one galaxy would pass right through the dark matter from the other, as it if didn't exist.
But researchers in Canada and the United States have detected what they are describing as a "dark core" — a large clump of dark matter that appears to have collided and stuck together, even as the galaxies the dark matter was attached to continued to move on.
Padre5 03 Mar 2012
I love Astronomy and science, and look at NASA"s Astronomy Picture of the Day website almost every day. Do You?