The M-class flare was accompanied by a coronal mass ejection currently forecast to land Earth with a glancing blow on June 18 ...

A pair of European satellites have created the first artificial solar eclipses through precise and fancy formation flying.

A vast, glowing halo enveloping a galaxy cluster has been discovered, defying expectations and pointing to turbulent cosmic ...

The Proba-3 mission, consisting of two spacecraft that fly in close formation to study the sun, has returned images of the first ever artificial solar eclipse ...

A team led by astronomers at Leiden University in the Netherlands and the National Radio Astronomy Observatory in Virginia (U ...