April 26, 2012 Leave a comment
During the class, we have learned about Black hole. What is Black hole? According to this article, Black holes are some of the strangest and most fascinating objects found in outer space. They are objects of extreme density, with such strong gravitational attraction that even light cannot escape from their grasp if it comes near enough. The name “black holes” was used since in 1969, John Archibald Wheeler gave the name. Before John Archibald Wheeler, mostly these were called frozen stars which are dead.
As I mentioned, even light cannot escape from Black holes. Therefore, black holes are invisible, but we can still detect black holes by the radiation. Because when matter is pulled in, sometimes, the area around black holes release strong high-energy light that can be even seen from across universe. Black holes have three layers, outer event horizon, inner event horizon, and singularity.
It sounds like scientists know about black holes well. However, this article mentioned that scientists do not truly understand the workings of black holes because our best physics theories break down when trying to describe them.