Smaller black holes tend to attract less material, making them naturally dimmer. Chandra would miss many of these faint ...

Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.

When winter sets in, and daylight is gone well before dinner, it’s hard not to notice how long the nights stretch on. For me, ...

A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...

Comet 3I/ATLAS is now visible from Earth, offering a unique chance to witness a spectacular celestial object right from your ...

The longest solar eclipse in a century will darken skies in 2027. Where will it be visible, how long will it last, and why is ...

“With this new machine-learning tool, the Daniel K. Inouye Solar Telescope can help scientists build a more accurate 3-D map ...