Is there any way to prove absolutely the existence of black holes since actual observation of them is?

Question

impossible by definition? Can their existence only be measured by their effects on other objects in space?

Answer 1

Yes and no.

Yes because every object not luminous itself needs interaction with light or other matter to be perceived. Try to find a sheet of black paper in your room while the room is pitch dark. You could not even find a white sheet of paper. In space moons, planets, interstellar clouds etc need action with light or matter in order to be detected. Sometimes they may just swallow any light like the Coalsack (interstellar cloud close to Cross of the South) or an extrasolar planet transiting his sun.

No because if you principally exclude everything than can not be seen directly because it needs interaction, not even the Moon could be accepted as existent.

Current research on Black Holes tries to prove their existence by their specific reactions with other matter. There are a number of objects currently classified as Black Holes. The most prominent are Cygnus X1 (Cyg X1), a close binary system of stars of which one most likely is a Black Hole of at least 10 solar masses, and Sagittarius A* (Sag A*), the super-massive Black Hole in the center of our galaxy of about 3,7 million solar masses.

The resolution of current telescopes is not high enough to give a final prove that nobody could doubt, but future telescopes with better resolution will allow to distinct clearly.

Answer 2

Dude. Black holes are discovered and their existance is as good as the existance of you and me and the solar system. It is proved that when an object passes near(possibly of distance of few millionss of austronomical units) found emitting X-Rays before the astral object plunges into blackhole.

So Black holes do exist.

Answer 3

You are correct that black holes cannot be directly observed, but that does not "disprove" their existence. Individual electrons cannot be observed either, but their existence is evident from their effect on other things (by creating electric and magnetic fields).

Answer 4

There are so many things in space that we cannot directly see. We can't see xrays, UV, IR, microwaves, etc... but seeing something with a human eye is not the standard of proof for existence.

Answer 5

Hi.
Have you ever heard of gravitational lensing? Look it up. Also we know how stars and planets behave around an object with stronger gravitational pull than theirs, just look at our earth and sun. So when a big star is obviously orbiting something that can´t be seen the star isn´t going around just for fun, something is affecting it´s behavior. That thing is then . . . .
http://en.wikipedia.org/wiki/Black_holes
Hope this helped.

Answer 6

We can't see them directly but we can certainly see their effects.