Astronomers announced the discovery of a starless cloud of hydrogen gas, a pristine relic of the cosmos that is almost as old as time itself.

They're called ghost particles for a reason. They're everywhere—trillions of them constantly stream through everything: our ...

Comet 3I/ATLAS has arrived in the inner solar system behaving as if the usual rules of comet physics were optional. Instead ...

The developer of a proposed pumped-water-storage hydroelectric project at Seminoe Reservoir has submitted a revised plan and ...

Leonardo Testi and team investigate the initial conditions for planet formation in this special astronomy focus ...

On Wednesday evening, former Google CEO Eric Schmidt and his wife, Wendy, announced a major investment in not just one ...

Scientists have identified a strange cosmic relic called Cloud-9 — a starless, gas-filled object dominated by dark matter.

The discovery of thousands more galaxies with stars ringing their main disks could help astronomers study galactic evolution ...

Though this hunt came up empty, the fact that 3I/ATLAS is only the third known object found in the solar system after ...

Discovered in July, 3I/ATLAS is not your average comet – it’s a giant snowball from beyond our solar system. The comet, ...

On Jan. 15, 2025, the Gaia spacecraft took its last image. Then the craft ran a final round of engineering tests, fired its ...

A lucky alignment of space- and ground-based telescopes has enabled researchers to nail down the mass of a rogue planet for the first time. Unlike worlds in our Solar System, rogue planets do not ...