A display of light in the night sky of the Northern hemisphere. It is caused [...]

an oval-shaped area around the magnetic poles, in which auroras might be visible. Imagine you [...]

A sudden burst of gas of an unstable magnetic field on the suns surface. Often [...]

A hole in the outer magnetic field (called corona) around the sun. Through it streams [...]

Occurs when Earth’s magnetic field is hit by a strong CME or a high-speed solar [...]

indicates the strength of geomagnetic activity. It is numbered from one to nine, with nine [...]

A graph showing the real-time situation of Earth’s magnetic field. This can be compared to [...]

Our sun’s activity is on a maximum once every 11 years or so, often called [...]

a stream of charged particles leaving the sun. If Earth-directed it might trigger aurorae.

an area on the sun’s surface with a strong magnetic field. That field can stretch [...]