What propels the expansion of the universe?

1 Answer

THJe BIg Bang the huge expansion which took place about 13.82 billions years ago.

Explanation:

But now it is found that the universe is accelerating and the reason is Dark energy. Only 4% matter in this universe is know form like atoms.. Other 23% is dark matter and 73% is dark energy..Astronomers believe that the Dark energy is responsible foir this acceleration.