Our sun is essentially a searing hot sphere of gas. Its mix of primarily hydrogen and helium can reach temperatures ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

NASA's Parker Solar Probe conducts groundbreaking studies of the Sun, revealing insights into solar winds and space weather ...

These are the planets that will be visible with the naked eye. A rare parade of planets will light up the night sky ...

Suni Williams stepped out on a spacewalk, her first since arriving at the International Space Station seven months ago ...

Pandora, NASA’s newest exoplanet mission, is one step closer to launch with the completion of the spacecraft bus, which provides the structure, power, and other systems that will enable the mission to ...

G3 (ATLAS) is now visible in the post-sunset night sky. It's best seen in the Southern Hemisphere, but it's visible north of ...

India’s Space Research Organisation (ISRO) has successfully docked a pair of satellites, making the nation the fourth to ...

The two astronauts have a busy day ahead of them. Hague and Williams will "patch light leaks in the NICER X-ray telescope, ...

For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the Andromeda galaxy. Don't go looking for it -- the flickering star is 2.2 million ...

The Parker Solar Probe flew within 3.8 million miles of the Sun's surface, the closest any spacecraft has ever gone.

NASA's Parker Solar Probe has flown into the Sun's corona. Structures known as coronal streamers and the Milky Way can be ...