NASA's Hubble Spots Black Hole Weighing As Much As 20 Million Suns

American space agency NASA has warned that there is an "invisible monster on the loose", in the form of a "runaway" black hole.
"Nothing like it has ever been seen before, but it was captured accidentally by NASA's Hubble Space Telescope," NASA said.

NASA SVS Hubble Finds Evidence of Mid-Sized Black Hole

Invisible monster on the loose”: Details explored as NASA Hubble spots black hole weighing as much as 20 million suns

NASA's Hubble Space Telescope spots runaway black hole creating 'trail of stars

NASA Telescope Captures Never-Before-Seen Details Of Remnant Of Star That Exploded 340 Years Ago

Growing black holes swallowing thousands of stars in space, NASA says

What is the biggest black hole in the Universe? - The Planets

Hubble determines the mass of an isolated black hole speeding around the Milky Way Galaxy: Digital Photography Review

NASA SVS Black Holes

Weird black holes may hold secrets of the early universe

Hunting rogue black holes in the Milky Way

NASA SVS Hubble Finds Evidence of Mid-Sized Black Hole

Supermassive black hole hi-res stock photography and images - Alamy

Hunting for a giant black hole, astronomers find a nest of darkness, 'something that makes us wonder' – Hartford Courant

Accidental capture of Hubble shows runaway supermassive black hole