Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

For a generation, cosmologists have worked with a simple story: the universe is not only expanding, it is expanding faster ...

The six-year Dark Energy Survey has released its full results, showing that two leading models of cosmology are equally valid ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding? Astronomers have tried two main methods to figure it out, but their numbers don’t ...

NSF Cerro Tololo Inter-American Observatory in the Chilean Andes. Image credit: Reidar Hahn, Fermilab University of Portsmouth is a member of ...

Will two rare supernovas finally tell us how fast the universe is expanding? Perhaps, but we'll have to wait for it for them ...

Scientists have made a new calculation of the speed at which the universe is expanding, using the data taken by the powerful new James Webb Space Telescope on multiple galaxies. Above, Webb’s image of ...

The Dark Energy Survey catalogued 669 million galaxies, using 140 million for precise measurements to help understand why the universe's expansion is accelerating rather than slowing down.

For much of the twentieth century, scientists expected the expanding universe to slow over time. The opposite turned out to be true. Space is stretching faster today than in the past, and the precise ...

(CNN) — The universe’s expansion might not be accelerating but slowing down, a new study suggests. If confirmed, the finding would upend decades of established astronomical assumptions and rewrite our ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests. "Remarkable" findings published today in ...