Scientists find monster black holes, biggest yet

CAPE CANAVERAL, Florida - Scientists have found the biggest black holes known to exist - each one 10 billion times the size of our sun.

A team led by astronomers at the University of California, Berkeley, discovered the two gigantic black holes in clusters of elliptical galaxies more than 300 million light years away. That's relatively close on the galactic scale.

The previous black hole record-holder is as large as 6 billion suns.