Scientists have revived the Big Crunch theory, suggesting the universe could collapse inward in about 33 billion years if dark energy weakens over time. This challenges prior estimates that projected ...

A new study says the universe may not expand forever and could shrink one day. Scientists found that dark energy may change ...

Our humble blue planet came into being with the Big Bang — the sudden expansion of the universe outwards. Now, according to astrophysicists and cosmologists, Earth and all of its celestial siblings ...

For centuries, people have looked to the stars, asking how it all began—and how it might end. Now, thanks to a bold new study by physicists from Cornell University, Shanghai Jiao Tong University, and ...