A research team has successfully imaged a nova in high resolution—and the images suggest that the nova was not a single, impulsive explosion. A nova is an astronomical phenomenon that occurs in a ...

A record-breaking study into a giant sunspot that triggered Earth's biggest geomagnetic storm in more than two decades has revealed surprising new details about the explosive dark patch. The monster ...

Imagine watching a slow-motion explosion that has been unfolding for over four centuries. In 1604, the astronomer Johannes Kepler looked up and saw a "new star" burning in the night sky. Today, we ...