GENERAL KNOWLEDGE

Detailed explanation-1: -If gravity overpowers expansion, the cosmos will collapse in a Big Crunch. If the universe continues to expand indefinitely, as expected, we’ll face a Big Freeze. But if dark energy pushes the expansion rate to near infinity, we’ll have a Big Rip that tears everything, even atoms, apart.

Detailed explanation-2: -Yes, gravity can slow down the expansion of the universe. That’s why if the universe’s average density is greater than critical, it is forecast to collapse into a big crunch (see this section of the Wikipedia article on the Friedmann equations).

Detailed explanation-3: -If the universe’s mass exceeds a certain crucial value, then gravity should eventually stop everything from flying away from everything else. With enough mass, the universe will eventually succumb to the overpowering force of gravity and collapse again into a single point-a theory often called the Big Crunch.