Black Holes is the universe's worst nightmare.

A black hole forms when a star about 10 times as large as our sun explodes into a powerful supernova. The dense core of the exploded star gets compressed together and forms a black hole.

The enormous gravity of a black hole is so strong that even photons aka light cannot escape the black hole's gravity.

A Twin

Few people know that black holes have a twin, white holes! White Holes are the reverse version of black holes. Instead of dragging everything into itself, white holes send out energy into the far reaches of the universe.