A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

When you buy through links on our articles, Future and its syndication partners may earn a commission. An artistic celebration of the Dark Energy Spectroscopic Instrument (DESI) year-one data, showing ...

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

The universe is expanding. That much is clearer. But it’s less clear whether this expansion is accelerating or slowing down.

Its most recent Data Release (DR2), based on the first two years of observations, contains precise measurements from nearly ...

New hints from one of the most extensive surveys of the cosmos to date suggest that mysterious dark energy may be evolving in ways that could shift how astronomers understand the universe. Dark energy ...

New supercomputer simulations hint that dark energy might be dynamic, not constant, subtly reshaping the Universe’s structure. The findings align with recent DESI observations, offering the strongest ...

A new study is implying that the universe may actually be slowing down and that the culmination of the decrease in dark energy could spell a reverse big bang.

Lawrence Berkeley National Lab, or Berkeley Lab, researchers mapped nearly six million galaxies throughout the past 11 billion years of cosmic evolution using the Dark Energy Spectroscopic Instrument, ...

Dark energy, a mysterious force that scientists believe is behind the accelerated expansion of the universe, is weakening — which could result in the universe over the course of billions of years ...

An international consortium of scientists studying dark energy said Tuesday their three-dimensional map of the universe over 11 billion years suggested the cosmos wasn't steadily expanding, but acting ...