We cannot see black holes because no light comes from them1. They are so gravitationally massive that even light cannot escape from a black hole, thus the name black hole.
1 While there is an emission of matter and energy, called Hawking radiation, that theoretically radiates from the perimiter of a black hole, no energy of any kind (including Hawking radiation) escapes from inside the 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 an interesting phenomenon that astrophysicists would like to explore, but naturally, they would not want to get too close.
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 in science fiction movies are giant, black holes that rotate like a circular saws inwards.
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.
no
so they are not a hole in space and time ? and then why there are some theorys like that black holes are birth place of new universe ? or you can travel across the universe by them ?
No, if you got near a black hole you would be stretched out like spaghetti, before being crushed into oblivion.
White holes are theoretical regions of spacetime that expel matter and energy outward, the opposite of black holes which pull matter in. They do not suck up objects like black holes do. However, there is no observational evidence for the existence of white holes in the universe.
No, this is not something material like a table or a chair. Black holes are simply an area in space where gravity is infinite.
You might think it would look amazing and scary! But... no. Black holes suck in light so it is not visible.
they look like worm holes but even bigger. they are in space