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 six planets will be visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, ...

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

For decades, scientists have tried in vain to accurately predict solar flares—intense bursts of light on the sun that can ...

Attosecond science, the laser-led study of what happens to matter over very short timescales, could lead to major advances in ...

Researchers from the University of Connecticut have created the first 3D maps of star-forming gas clouds in one of the most ...

Two stars in Wolf-Rayet 140 collide, forming carbon-rich dust. Webb captured 17 expanding dust shells, revealing ...

"There are still many things related to planetary formation and the early evolution of young planetary systems that we don't ...

The ESA Solar Orbiter has provided a stunning new look at the Sun by combining 25 high-resolution images. This mosaic offers a detailed view of the solar surface, including sunspots and granules, ...

Space agencies around the world are setting their sights on new frontiers, with plans to explore Venus and other distant ...