Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

This hypothesis is not new. It was given the affectionate nickname of Big Crunch, and says that the accelerated expansion of ...

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if ...

For centuries, humanity has pondered the ultimate fate of the universe. From theories of infinite expansion to the concept of ...

The bold question-askers at What If investigate what would happen if the universe stopped expanding. Pete Hegseth gets Navy ...

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...

What if the universe remembers? A bold new framework proposes that spacetime acts as a quantum memory. For over a hundred ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and ...

Gamma-Ray Bursts are the most energetic explosions known in the universe and they release intense gamma radiation, it could ...