For the last 25 years, most scientists have believed that about 70% of the universe is formed by something called ‘’dark ...

We've known that the universe is expanding since 1929, and that its expansion is accelerating since 1998. The culprit behind ...

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 ...

In 1998, scientists discovered that our universe expands with acceleration, and in order to explain this effect, the concept of dark matter was introduced. This is a special type of energy that fills ...

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. Subscribe to our newsletter for the latest ...

AUSTIN (KXAN) — A commonly held belief that the universe is rapidly expanding may be wrong. A new paper published this month suggests the universe’s expansion might be slowing down and it could mean ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American A few years ago, soon after moving to Los ...

Alex Filippenko, a professor of astronomy at UC Berkeley and a member of the National Academy of Sciences and the American Academy of Arts and Sciences, will present “The Accelerating Universe and the ...

The universe is ballooning outward at an ever-faster clip under the power of an unknown force dubbed dark energy. One of the major goals for NASA's upcoming Nancy Grace Roman Space Telescope is to ...