The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.

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

Newly unredacted documents mostly shed light on C.I.A. sources and methods. The Justice Department is moving to disclose new ...

A ntarctica isn’t a floating chunk of ice like the Arctic. Beneath its frozen surface sits a solid continent of mountains, ...

NASA astronaut Sunita Williams’ return to earth at the conclusion of the scientific mission to the space station was more ...

ESA's Euclid mission is exploring the "dark universe." The space telescope's latest images offer fascinating new insights.

To save a coastal wetlands, county officials worry Florida Power & Light is jeopardizing the ongoing clean-up of a saltwater ...

After finding the debris of two colliding stars swimming in the ocean, researchers are after more evidence from the lunar ...

Scientists have unveiled the most detailed map yet of the landscape hidden beneath Antarctica's ice.The high-resolution map ...

The first solar eclipse in 2025 will be visible from Canada, the northeastern U.S., Europe and Africa. Here’s where and when ...