Earth just experienced a rare S4 solar radiation storm, the most intense since 2003 — powerful for satellites and astronauts, ...

The craters bear the names of astronomers who revolutionized our understanding of the night sky.

The planet is experiencing the most powerful solar event since 2003—and it's bringing spectacular Northern Lights.

The light from the phone did so little to illuminate the operating room that the doctors worked largely by touch.

Old satellites and other space junk fall toward Earth every day, and the shock waves they create could be used to track their ...

Nasa’s avoidable tragedy exemplified 1980s overconfidence and haunted a generation, but the allure of space exploration endured ...

The catch: It will have to be on the moon ...

You can feel the buzz before you even see the booths, a low hum of creativity that makes you slow down and look closer.

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

A powerful flare unleashed a severe solar storm that caused auroras and GPS disruptions on Earth.

Solar Orbiter has captured the clearest evidence yet that a solar flare grows through a cascading “magnetic avalanche.” Small, weak magnetic disturbances rapidly multiplied, triggering stronger and ...