The “dark energy” field that has fueled the expansion has been weakening over the past 4 billion to 5 billion years, new data ...

A project to map galaxies across the universe may have spied cracks in the foundation of our understanding of the cosmos.

New data involving millions of galaxies and luminous galactic cores is providing fresh evidence that the enigmatic and ...

A new map of cosmic expansion suggests that dark energy evolves over time, hinting that the universe doesn’t work the way we ...

The standard model of how the universe works involves the widely accepted theory that dark energy is a fundamental constant ...

Findings from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy could be evolving over time. If ...

Dark energy, the mysterious phenomenon that powers the expansion of the universe, may undergo periodic 'violent transitions' ...

Physicists may need to come up with a new theory for how the universe works, after a dark energy experiment has produced ...

Dark energy, the mysterious force thought to be driving the ever-faster expansion of the universe, appears to be changing ...

Theoretical physicists James Hartle and Stephen Hawking, for example, proposed that rather than having a strict beginning as ...

New images of the infant universe captured by the Atacama Cosmology Telescope (ACT) are the most precise "baby pictures" to ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.