Aurora alert! The colossal solar storm could impact and trigger impressive northern lights.

The sun is the biggest object in the solar system; at about 865,000 miles (1.4 million kilometers) across, it's more than 100 times wider than Earth. Despite being enormous, our star is often called a ...

Is a sun a star or a planet? Current definitions define a star as a body that generates its own energy. While humans have relied on the sun for hundreds of thousands of years, it's only in the last ...

These images help to unravel the magnetic mechanisms driving the sun's behavior and shaping the space environment throughout the solar system. When you purchase through links on our site, we may earn ...

This book is an astronomy text dedicated in 1478 by Christianus Frollianus, a court astronomer of Naples, to Giovanni of ...