To solve the mystery, the XMM-Newton telescope -- which studies low-energy X-rays, up to about 10 kiloelectron volts -- teamed up with NuSTAR -- which looks at very high-energy X-rays. NuSTAR, with a range from 3 to 79 kiloelectron volts, would fill in the
Updated: 02/27/2013 09:26P
The nova on Sep 18, produced hard X-rays with energies above 10,000 electron volts or several thousand times that of visible light when it reached an intensity equal to that of the famous Crab Nebula, a supernova remnant that serves as a calibration target
Updated: 10/06/2012 05:31A