Companion star hidden for 21 years in a supernova's glare
Wednesday, September 10, 2014 - 03:32
in Astronomy & Space
Using NASA’s Hubble Space Telescope, astronomers have discovered a companion star to a rare class of supernova, known as a Type IIb. The discovery confirms a long-held theory that the supernova, dubbed SN 1993J, occurred inside what is called a binary system, where two interacting stars caused a cosmic explosion.