What are Black Holes ?

For sometime, we have been hearing the news about Black Holes. What are Black holes ? In the 20th century, astronomers predicted the existence of dark areas in space. The gravitational pull of these areas are so high that nothing can escape out of it, not even light. These areas are called as Black holes or Collapsars.

A german astronomer predicted the existence of Black holes and he theoretically proved that black holes are the end results of all stars which have a mass greater than the sun. The black holes are the smallest and the most dense objects in the universe.

Scientists are still looking for the evidence of a real Black hole in the Universe. In the year 1974, a black hole Cygnus X-1 was discovered based on which they came to many other conclusions.