Dark Energy

There is a hypothetical form of physics energy call dark energy. Against belief of majority scientist in the past century, the universal does not contract, but instead expand of the Big Bang. This give births to the necessity of another energy to act against the gravitational force.

Cosmological constant was a term first proposed by Einstein for the wrong reason, to keep the universal stay intact as we do not want to see the universal collapse by itself. Einstein then admitted this is the biggest blunder in his life later on. But universal has a most unexpected way in revealing its secret. Recent years of research once again support the existence of dark energy again.