News tagged with geophysical research letters

Observing the Birkeland currents

When the supersonic solar wind hits the Earth's magnetic field, a powerful electrical connection occurs with Earth's field, generating millions of amperes of current that drive the dazzling auroras. These ...

Oct 06, 2014
4.2 / 5 (5) 1

A Puzzling Collapse of Earth's Upper Atmosphere

NASA-funded researchers are monitoring a big event in our planet's atmosphere. High above Earth's surface where the atmosphere meets space, a rarefied layer of gas called "the thermosphere" recently collapsed ...

Jul 15, 2010
4.4 / 5 (47) 45 | with audio podcast