Q. The “loop quantum gravity” and “bounce-out theory” was seen in the news sometimes, are used in the context of –
Explanation – The ‘loop quantum gravity’ and “bounce-out theory” are used in the context of white holes.
Loop quantum gravity is a theory that attempts to reconcile quantum mechanics with general relativity. It proposes that space and time are not continuous, but instead are made up of tiny loops or knots. This theory suggests that the universe began in a state of infinitely small size and density, and then bounced back in a Big Bang.
The bounce-out theory is a hypothesis that suggests that the universe will not end in a Big Crunch, but instead will continue to expand forever. This theory is based on the idea that the universe is made up of dark energy, a mysterious force that is causing the universe to expand at an accelerating rate.
White Hole is the reverse of Black Hole. Black hole is a region from which nothing, not even light, can escape due to the overwhelming gravitational pull.
On the other hand, white hole is envisioned as a region into which nothing can fall. Instead of matter and energy being pulled inward, a white hole would expel matter and light, but nothing could enter it.
Source: ForumIAS
