Northern lights were visible in several parts of the U.S. Tuesday night into Wednesday. So what are auroras, and what caused ...

Canadian astronomical research is getting a big boost with the return of Sara Seager to Canada after around 20 years at MIT.

A week after strong geomagnetic storming gave half the U.S. a chance at seeing the northern lights, new solar activity could ...

A massive solar flare and severe geomagnetic storm watch may bring the aurora as far south as parts of California and Alabama ...

A massive solar flare and severe geomagnetic storm watch may bring the aurora as far south as parts of California and Alabama ...

Cloud cover is bad for picnics and for viewing stars through a telescope. But an exoplanet with dense or even total cloud ...

A newly discovered comet named C/2025 V1, which some have compared to 3I/ATLAS, is due to make its closest approach to Earth on Tuesday, Nov. 11.

Blue Origin postponed the launch of NASA's ESCAPADE Mars mission after bad weather hit the New Glenn launch pad in Florida.

Blue Origin, the private space firm headed by Amazon's Jeff Bezos, is set to launch its New Glenn rocket on Wednesday, ...

Live updates from Sunday afternoon’s scrubbed Blue Origin launch attempt on NASA ESCAPADE mission from Cape Canaveral Space ...

Cleaner air is making marine clouds dimmer and oceans warmer, revealing a hidden climate trade-off as pollution declines.

NASA faces backlash after claims it withheld high-resolution images of interstellar comet 3I/ATLAS, as scientists and the ...