Nearly all galaxies are expected to have supermassive black holes in their centres. In 2011, astronomers found two galaxies with the biggest black holes known.
The tiniest black hole may be less than 3 times the sun's mass. This puts IGR J17091-3624 towards the predicted minimal black hole stability limit. This hole has winds of 20 million mph black hole.
Black holes consume everything that drifts near, even other black holes. Scientists recently saw a huge black hole in one galaxy being engulfed by another.
Researchers discover that black holes can also spew materials. Observations of a black hole named H1743-322, which is 28,000 light-years from Earth and has five to 10 times the mass of the sun
ULAS J1342+0928, the oldest black hole identified, formed 690 million years after the Big Bang. The Big Bang happened 13.7 billion years ago, according to scientists.
Even though black holes' gravitational pulls are so intense, they are also the centre of quasars, the most bright, powerful, and energetic objects in the universe.