More than twice the expected amount of novae have been found popping off along the jet from M87’s supermassive black hole.

The bright, naked-eye star Betelgeuse is well known for its variations — some of which may be caused by an unseen companion ...

A waning Moon brings out deep-sky objects, Comet Tsuchinshan-ATLAS still stuns, and moons of Saturn and Jupiter stand out in ...

The crew spent nearly eight months aboard the International Space Station conducting more than 200 scientific experiments.

The latest X-ray observatory found a warped black hole disk and a supernova spewing iron — and it’s just getting started ...

The SpaceX Crew Dragon Endeavour, now set to splash down this week, has racked up the most time spent in space by a crewed ...

Catch some shooting stars, get in a glimpse of the fading Comet Tsuchinshan-ATLAS, and see Venus mingle with Antares in the ...

Astronomers hypothesize that a long-ago dwarf galaxy dubbed Loki may have merged with the Milky Way when our galaxy was in ...

Comet C/2023 A3 — better known as Tsuchinshan-ATLAS — is fading in brightness as it speeds away from the Sun and Earth in the ...

The best comet of the year is starting to fade in brightness, but it’s still an easy naked-eye object in the evening sky.

Our planet’s surface is littered with debris from the skies — and researchers have found that most come from only a few ...

Euclid scans the cosmos in visible and near-infrared light, including an infrared spectrometer, which allows it to measure ...