Swarm mission discovers interannual waves in Earth’s core

Swarm mission discovers interannual waves in Earth’s core

Using information from ESA’s Swarm satellite mission, scientists have discovered a completely new type of magnetic wave that sweeps across the outermost part of Earth’s outer core every seven years. The discovery offers a way to probe the cylindrical radial component of the magnetic field inside Earth’s core.

Most detailed map of Earth’s magnetic lithosphere

Most detailed map of Earth’s magnetic lithosphere

European Space Agency's used data provided by their trio of Swarm satellite and combined it with historical data from the German CHAMP satellite and observations from ships and aircraft to produce the most detailed map of the Earth's lithosphere. The map is…

New phenomenon discovered in the night sky

New phenomenon discovered in the night sky

A new phenomenon seen as a giant purple streak of light in the night sky has been recently discovered and, for lack of a better word, named Steve. Steve was discovered thanks to scientists, citizen scientists, ground-based imagers and ESA's magnetic field Swarm…

Birkeland currents stronger in the northern hemisphere, vary with the season

Birkeland currents stronger in the northern hemisphere, vary with the season

ESA’s Swarm mission has discovered that this seasonal variation of Birkeland currents, strong electric currents in the upper atmosphere, is not the same in the north and south polar regions. Named after Kristian Birkeland, the scientist a century ago who first…

Supersonic plasma jets discovered

Supersonic plasma jets discovered

Scientists analyzing data obtained by Swarm trio of satellites have discovered supersonic plasma jets high up in our atmosphere that can push temperatures up to almost 10 000 °C (18 000 °F). The discovery was presented at this week’s Swarm Science…

Highest resolution map of Earth’s lithospheric magnetic field

Highest resolution map of Earth’s lithospheric magnetic field

After three years of collecting data, Swarm mission scientists have produced the highest resolution map of Earth’s lithospheric magnetic field from space to date. The dataset combines measurements from ESA’s Swarm satellites with historical data from the…

Swarm-B on possible collision course with space debris

Swarm-B on possible collision course with space debris

US armed forces’ Joint Space Operations Center (JSpOC) has identified a close approach for ESA's Swarm-B satellite forecast to occur at 23:10 UTC on January 25, 2017. The forecast miss distance is just 361 m (1 184 feet), and this triggers a risk above the…