7 amazing facts about black holes.
1. Today we are well aware those Black holes are the objects that have a greater gravity than any other object in the universe. But do you know why they are known by the word “ Black hole ”? Of course, black holes were predicted a hundred years ago. But the word black hole was first used by the American astronomers John Wheeler In 1967 . 2. The temperature of the accretion disc outside a blackhole can reach millions of degree Celsius. But you may surprise to know that studies have shown that the central temperature of a supermassive black hole can be up to 1.4×10 -14 kelvin. This is an extremely freezing temperature. This temperature is very close to absolute zero but not equal to absolute zero. In fact the absolute zero temperature is -273 0 15 Celsius. At this temperature, the movement of atoms stops completely. If we talk about the coldest place, it is NASA’s Cold Atom Laboratory with a temperature of -273 degree Celsius. This is also exactly one degree less than absolute ze...