Last spring, the strongest geomagnetic storm in two decades slammed Earth, producing light displays across the Northern ...

The sun may rise every morning, but the amount of sunlight reaching Earth's surface can substantially vary over decades, ...

Deaths of nearby massive stars may have played a significant role in triggering at least two mass extinction events in ...

Cosmic rays can come from distant supernovas, black holes and even the sun, and they constantly lash Earth's upper atmosphere. When they splinter as they interact with air molecules, they produce ...

The northern lights revealed themselves to a handful of states Tuesday, but if you missed out, you still have a chance to ...

It seems as if Earth's atmosphere is incredibly thin, wrapped tightly around our planet. In fact, the atmosphere consists of multiple layers, with some scientists of the opinion that the atmosphere ...

Cosmic rays may play a role in triggering lightning on Earth, a new study suggests ... Researchers think that during the most active part of the sun's 11-year cycle, known as solar maximum ...