Question

If a black hole is "black, and dark" how can we find them in the dark, vast, cold space?

Answer 1

studying stars and gases to find if a black hole's strong gravity is affecting them

Step-by-step explanation:

A black hole can not be seen because its strong gravity pulls all of the light into the middle of the black hole; black holes are invisible because light can not escape them. But scientists can see how the strong gravity affects the stars and gases around the black: scientists can study stars to find out if they are orbiting a black hole