Astronomers have made the first-ever gamma-ray measurements of a gravitational lens, a kind of natural telescope formed when a rare cosmic alignment allows the gravity of a massive object to bend and amplify light from a more distant source.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Z...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Z...