Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New findings risk turning the tension into a crisis, scientists say. When you ...

To astronomers in the 1990s, these three facts were self-evident: The universe is expanding; all the matter in the universe is gravitationally attracting all the other matter in the universe; ...

The Atacama Cosmology Telescope is a collaborative project led by Penn and Princeton researchers (Photo Courtesy of ACT Collaboration). The Atacama Cosmology Telescope — a National Science ...

NEW YORK (AP) - Scientists are homing in on the nature of a mysterious force called dark energy, and nothing short of the fate of the universe hangs in the balance. The force is enormous — it makes up ...

Did The universe really begin with a bang, a bounce? The theory that the universe is both possibly having endured a sudden contraction and then bounced into the expanding universe we know today is not ...

The scientific study of cosmology, the field that focuses on the origins and evolution of the universe, is barely a century old. It has already been transformed more than once by new ideas, new ...

Inspired by a true story of survival.

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