Quote:
Originally Posted by Wowbagger
Off topic slightly... if we can see Black Holes through 'gravitational lensing', why would we not get the same effect from Dark Matter, which apparently takes up 90% of the universe?!? Surely it would occasionally float between us and a light source?  |
Yes it does.
Strong evidence for dark matter is provided by lensing of the "Bullet Cluster galaxies".
http://en.wikipedia.org/wiki/Bullet_Cluster
Steven