Scientists spot black hole so huge it 'shouldn't even exist' in our galaxy

Beijing Planetarium via the China Academy of Sciences. Too big: Astronomers say the black hole they have found is twice as massive it should be, according to existing models. [AFP/ Yu Jingchuan]

Astronomers have discovered a black hole in the Milky Way so huge that it challenges existing models of how stars evolve, researchers said Thursday.

LB-1 is 15,000 light years from Earth and has a mass 70 times greater than the Sun, according to the journal Nature.