Untangling the Sun’s messy and mysterious patterns may be a computer’s job someday, but the technology isn't quite there yet.

A recent solar flare has prompted a geomagnetic storm watch and could produce aurorae this weekend. Here's how to see them if ...

This faint southern constellation contains a smattering of galaxies — and one standout globular cluster — to explore.

The terminator sweeps across the Moon, Comet Tsuchinshan-ATLAS continues to wow, and Jupiter reaches a stationary point in ...