Galaxies are making far fewer stars even though much of their atomic hydrogen reservoir remains surprisingly intact.

Learn how two galaxies slowly pulling toward each other inspired a name that captures their cosmic collision and the birth of ...

Each image contains X-ray data from Chandra that has been collected across the observatory's decades in space. The post Space ...

The universe is ready for its close-up! That's because today marks the day that the Vera C. Rubin Observatory begins it's 10-year mission to shoot the greatest cosmic move ever created. The ...

This high-energy data has been combined with data from telescopes such as NASA’s James Webb and Hubble Space Telescopes, IXPE ...

The Large High Altitude Air Shower Observatory (LHAASO) officially released the precise measurements of high-energy gamma radiation from the W51 complex, confirming it as a cosmic-ray accelerator ...

As it studies cosmic microwaves, the Simons Observatory in Chile aims to help prove or disprove cosmic inflation, a notion that the universe expanded rapidly in the moment after the Big Bang. Two of ...

A new observatory is set to detect sources of cosmic rays, dark matter and other relics of the Big Bang in a few years' time.

A groundbreaking ceremony will be held 9 a.m. MDT Saturday Aug. 28 in the desert southwest of Delta, Utah, for the Telescope Array – a Japanese and American cosmic ray observatory designed to find the ...

W. M. Keck Observatory is pleased to announce its newest instrument, the Keck Cosmic Reionization Mapper (KCRM), has successfully achieved “first light,” marking its first time ‘seeing’ the universe ...

The 18-story silhouette of the nearly completed Vera C. Rubin Observatory loomed above as I looked over a field of construction remnants a few weeks back. Beside me were two-ton custom jigs and dozens ...

Outer space is awash in neutrinos, subatomic particles that travel at the speed of light and have no mass — and that provide a cosmic “smoking gun.” On Thursday, astronomers announced a breakthrough: ...