New Delhi, June 12 -- A new study by UK scientists has questioned the famous Big Bang theory. It suggests the universe may not have started from a single explosion.

The research, published in Physical Review D by scientists from the University of Portsmouth, puts forward a bold new idea. It says our universe exists inside a black hole.

The team believes the universe was born from a huge gravitational collapse that formed a black hole. This theory, called the "Black Hole Universe", goes against the older idea that the universe came from a point of infinite density.

Instead, the new theory says the matter inside the black hole got extremely compressed. Then, it bounced outward like a spring. This bounce is believed to have led to the uni...