Scientists have long held that the universe is expanding at an ever-increasing rate, driven by a mysterious but measurable ...

Evidence now suggests the universe’s expansion has started to slow, not speed up. The findings imply dark energy is weakening ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously ...

Evidence suggests the universe’s expansion has started to slow, not accelerate. The results imply dark energy is weakening ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously ...

Astronomers challenge the Nobel-winning theory of an accelerating universe, suggesting it may instead be slowing ...

WASHINGTON (Reuters) - Fresh corroboration of the perplexing observation that the universe is expanding more rapidly than expected has scientists pondering the cause - perhaps some unknown factor ...

A remarkable new study challenges the findings of Nobel Prize winning research into how our universe has changed over time.

Astronomers have known for decades that the universe is expanding. When they use telescopes to observe faraway galaxies, they see that these galaxies are moving away from Earth. To astronomers, the ...

The big picture: Astronomers have observed something unusual in the data gathered by the Hubble Space Telescope: the universe seems to be expanding faster today than it was billions of years ago, ...