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How do you find a black hole if they are black?

In: Astrophysics [Edit categories]

Answer:

Scientists can easily find black holes because they can see the effects that black holes have on everything around them(stars, planets, dust). Black holes also emit some sort of radio waves that scientists can detect.

There are a number of methods which have been proposed to assist in locating black holes. One such method takes into account that a black hole whilst emitting no light will still exhert a gravitional force.
Observations have been made in systems of two stars orbiting each other, being attracted by their respective gravitional forces. Other observations have been made where a star appears to orbit an unseen partner. This Unseen partner is BLACK HOLE.

A good example of this effect is Cygnus X-1.

First answer by ID1291580811. Last edit by Mrkbh. Contributor trust: 685 [recommend contributor ]. Question popularity: 4 [recommend question].

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