According to the Big Bang Theory, the universe emerged from an initial singularity approximately 13.8 billion years ago, expanding rapidly in an event known as cosmic inflation.
The Big Crunch theory proposes that the expansion could one day reverse, leading to a cosmic collapse.
A radical yet compelling idea is that the universe is both expanding and collapsing, depending on how we observe it.
The question of whether the universe is expanding, collapsing, or both remains one of the greatest mysteries in physics.