A Rockot took off Friday at 24:02 GMT (1:02 p.m. in Paris) from the base of Plesetsk in Russia carrying three satellites for European study from the space the magnetic field of the Earth. The images of the launch were broadcast live by the European Space Agency (ESA).
Weighing 473 kg each, three identical satellites, evolve on three slightly different orbits. Which will separate the different magnetic sources and detailed mapping variations.
This mission called Swarm (“swarm” in English) will allow scientists to deepen their understanding of the evolution of magnetic field that protects the Earth from solar winds, a complex and fluctuating phenomenon that remains poorly understood.
Earth’s Core: a giant dynamo
The main source of the magnetic field of the Earth is located at 3000 km under our feet, in the iron core and molten nickel which works as a giant dynamo through currents therethrough.
Swarm data will be collected by the three satellites for at least four years. They will also be used in maps and models supplying many everyday applications, such as maps or compasses Civil Aviation smartphones.
| Qu ‘What is the magnetic field? | class=”S462 c7″> The magnetic field that surrounds our planet acts as a protective shield. It prevents the dangerous part of the solar radiation reaching the earth’s surface, says it on the website of CNES. The activity of the earth’s core, the Geodynamo, is the source of much of this magnetic field. Other phenomena, such as magnetic rocks of the crust and ocean circulation are also involved. Distinguish these different sources the Swarm mission will. |
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