Animation of Hercules X-1, one of the most special neutron star systems known so far. Astronomers using ESA's Integral gamma-ray observatory may have detected individual X-ray emitting regions on the neutron star’s surface, resolving details on a celestial object only 20 km across at a distance of 15 000 light-years.
MOV (Size: 
HI-RES JPEG (Size: 
Integral anniversary