Due to light being unable to escape the black hole, we cann't see it! It's like trying to see in a dark room with a flashlight, that has dead batteries. You cann't see the light because their is none to reflect.
Black holes emit so very little radiation they are hard to see. Many black holes lie at the center of galaxies and there they are hidden by stars and dust.
The whole idea of black holes is that nothing, not even light, can escape from them. However, there are several indirect ways to detect them.
You can't see a black hole.
You can't see a black hole.
Black holes are that stars which has passed their all life or expired star and it absorb light of sun therefore cant reflect the ligh of sun, so its look like black holes.
Black holes are located throughout the universe, often at the centers of galaxies. They can also be found in binary systems with other stars. Some black holes are remnants of massive stars that have collapsed, while others are supermassive black holes at the center of galaxies like our own Milky Way.
Black holes are blavk because their gracity is so strong that light cannot escape for us to see.
See link
There is enough evidence for black holes - I don't see any problem there.
The assumptions are not quite correct.Scientists CAN see black holes. In fact, black holes are among the brightest objects in the Universe. Of course, light can't escape from WITHIN the black hole; rather, what we see is the accretion disk. Also, scientists are PRETTY SURE that black holes are real. As to why it is important: Black holes are fascinating objects by themselves. They also seem to play an important role in galaxy formation.
None. Black holes are completely black, making them invisible, so it would be pointless to put something you can't see in a constellation.
You cannot see our sun.