For Suni Williams, 608 days in space was enough to call it a career. The 60-year-old NASA astronaut who flew on three ...

"Suni Williams has been a trailblazer in human spaceflight, shaping the future of exploration through her leadership aboard ...

Astronomers have long sought evidence to explain why comets at the outskirts of our own solar system contain crystalline ...

Sunspot AR3234 blasted an X2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

Solar flares are powerful bursts of radiation. A SWPC report added that the storm calmed and reached G4 status again on ...

First spotted in the early 1800s, the celestial object has become one of the most iconic planetary nebulae in the sky, often ...

ESA's Proba-3 mission, made up of twin spacecraft capable of aligning to create artificial eclipses, has captured "rare" ...

Earth's magnetic field was struck by a "severe" solar storm Monday (Jan. 19), triggering vibrant auroras in the U.S. and ...

A closer look at the Helix Nebula reveals how dying stars shed material, shape space, and hint at the distant future of our own Sun.

Solar Orbiter has captured the clearest evidence yet that a solar flare grows through a cascading “magnetic avalanche.” Small ...

NASA explained that the flare was classified as an X1.9 flare. X-class flares are the most powerful type of solar flares. The number 1.9 shows how strong the flare was within this highest category.

NASA confirmed its SunRISE small satellites completed launch vibration testing, marking a completed prelaunch milestone ahead ...