SpaceWe’ve discovered the most massive black hole yet A galaxy billions of light years from Earth houses what may be the most massive black hole in the universe, equivalent to cramming the full mass of a small galaxy into a single object 51¶¯Âþ
SpaceStunning image of a supernova reveals a dead star that exploded twice Pictures of a distant supernova remnant show two concentric rings, providing clear evidence that exploding white dwarf stars go boom twice in the blink of an eye 51¶¯Âþ