Even before the first stars lit up the Universe, the Cosmos was not the cold place most researchers once imagined. New ...

If recent discoveries that dark energy is evolving hold any water, our Universe will collapse under its own gravity on a ...

The early universe was already warm before reionization, revealing that the first stars did not flicker on in an icy cosmos.

A discovery of binary stars could be the first step in building a more complete picture of how our galaxy formed, according ...

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

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 ...