European satellites launched to eye Earth’s weakening magnetic field

November 24, 2013SPACEThe European Space Agency on Friday launched three satellites it hopes will help understand why the magnetic field that makes human life possible on Earth appears to be weakening. The satellites, comprising ESA’s Swarm project, were launched from Russia’s Plesetsk Cosmodrome on a Rockot vehicle at 7.02 a.m. EST and were placed in near-polar orbit at an altitude of 490 kilometers (304 miles) about 91 minutes later. Data that Swarm is due to collect for the next four years will help improve scientists’ relatively blurry understanding of the magnetic field that shields life on Earth from deadly solar radiation and helps some animals migrate. Scientists say the magnetosphere is weakening and could all but disappear in as little as 500 years as a precursor to flipping upside down. It has happened before – the geological record suggests the magnetic field has reversed every 250,000 years, meaning that, with the last event 800,000 years ago, another would seem to be overdue. While the effects are hard to predict, the consequences may be enormous. Satellites, essential among others for communications, could be more exposed to solar wind, and the oil industry uses readings from the magnetic field to guide drills. “Swarm is an essential mission, not only for Europe but also for the world,” ESA Director General Jean-Jacques Dordain told Reuters following the launch. “We cannot live on planet Earth without this (magnetic) shield.” The Swarm mission was developed and built by European aerospace group EADS’s Astrium unit. –Reuters
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This entry was posted in Earth Changes, Earth Watch, Earth's core dynamics, Earthquake Omens?, Magnetic pole migration, Planetary Tremor Event, Seismic tremors, Signs of Magnetic Field weakening, Solar Event, Space Watch, Tectonic plate movement, Time - Event Acceleration, Unsolved Mystery. Bookmark the permalink.

5 Responses to European satellites launched to eye Earth’s weakening magnetic field

  1. KristineB says:

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  2. elizabeth says:

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  3. Rick says:

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