Saturday, March 10, 2012
"This illustration compares the size of a neutron star to Manhattan. The crushed core of a star that has exploded as a supernova, a neutron star packs more mass than the sun into a sphere just 10 to 15 miles wide." Credit: NASA/Goddard Space Flight Center
The crazy thing about a neutron star is that when you look at one side, you see parts of the other side. The gravitational pull is so strong that escape velocity approaches the speed of light. It is not so strong that light is sequestered forever, but strong enough that light is massively bent around the sphere to the other side.