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 ...

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

Recent findings suggest a potential shift in our understanding of the universe’s expansion. After decades of acceleration, ...

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

Astronomers are rethinking one of cosmology’s biggest mysteries: dark energy. New findings show that evolving dark energy models, tied to ultra-light axion particles, may better fit the universe’s ...

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

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

In a groundbreaking cosmic test, researchers have discovered that dark matter behaves more conventionally than previously ...

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

DESI, seen here beneath star trails, aims to create a 3D map of the universe. PNO / NOIRLab / NSF / AURA / B. Tafreshi Dark energy, a mysterious force that drives the accelerating expansion of the ...

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 ...

The U.S. National Science Foundation Nicholas U. Mayall 4-meter Telescope at Kitt Peak National Observatory (KPNO), a Program of NSF NOIRLab, beneath streaking star ...