Ask most astronomers, and they'll tell you that dark matter and dark energy make up more than 95 percent of the universe and that they are the explanations for many of the large-scale phenomena we ...

A new study argues that dark matter and dark energy might be illusions caused by the universe’s forces fading over time. For many years, scientists have thought that dark matter and dark energy make ...

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is ...

Dark energy, which drives the accelerated expansion of the Universe, is assumed to be constant since the Universe began by ...

Since the early 20th century, scientists have gathered compelling evidence that the universe is expanding at an accelerating ...

WASHINGTON (Reuters) - New data involving millions of galaxies and luminous galactic cores is providing fresh evidence that the enigmatic and invisible cosmic force called dark energy - responsible ...

In a new study, scientists began pondering a pretty wild question: What if black holes can convert dead star matter into dark energy, the mystery force driving the acceleration of the expansion of the ...

The largest-ever 3D map of the cosmos hints that the dark energy that’s fueling the universe’s expansion may be weakening. One community of theoretical physicists expected as much. On the morning of ...

A team's new findings, aided by Japan's Fugaku supercomputer, challenge the standard Lambda Cold Dark Matter model.

Dark energy—the term used to describe whatever is causing the universe to expand at an increasing rate—is one of the universe's greatest mysteries. The most widely accepted theory currently suggests ...

For decades, astronomers have believed that dark matter and dark energy make up most of the universe. However, a new study ...