The ATLAS experiment at CERN has published its first measurements of proton–oxygen collisions, simulating cosmic-ray impacts on Earth's atmosphere. The high-precision results, achieved at a few ...

Astronomers have achieved one of the most precise measurements ever made of the Milky Way’s distant spiral arms, revealing ...

Cosmic inflation posits a brief epoch of accelerated expansion in the early Universe, resolving the horizon and flatness puzzles while laying down the primordial density fluctuations that seed cosmic ...

New three-dimensional (3D) models of objects in space have been released by NASA's Chandra X-ray Observatory. These 3D models allow people to explore—and print—examples of stars in the early and end ...

Lithium is unique in the cosmos. It’s one of the only elements thought to have at least three cosmic origins: the Big Bang, nuclear reactions in stars, and cosmic ray collisions. Scientists have used ...

A new measurement confirms what previous — and highly debated — results had shown: The Universe is expanding faster than predicted by theoretical models, and faster than can be explained by our ...

NASA's James Webb Space Telescope has confirmed that a galaxy cluster 10.4 billion light-years away is the most distant strong gravitational lens ever observed — and that its dark matter core is ...

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