Albert Einstein predicted their existence using some pretty complicated math. It was not until some years after his death that we actually detected one (Cygnus X-1).
Karl Schwarzschild discovered black holes.
black hole got it's name because when look at a black hole, you only see black. also if you drop an item in the black hole the item is gone because there is a hole in there. so that's how black hole get's its name
Steven Hawking is researching black holes right now.
black holes have such great gravity that nothing, not even light can escape them. That is why they were named "black holes".
Holes, which include black holes and ozone holes were discovered in the space and atmosphere respectively.The black hole was discovered in the space and ozone holes were discovered above the Antarctica.
The term "Black hole" first appeared in print in an article by Ann Ewing in "Black Holes in Space" published in 1964.
They get their names from the way that they look.
An astronomer is a scientist who studies celestial bodies (planets, stars, black holes, moons, nebulae, galaxies).
Pick anyone and there will be black hole in it.
red giants.
The Dark Side
black holes, and black nymph