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Reconnecting Magnetic Fields

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Figure 1. A twisting solar prominenceClick to Enlarge ImageSolar storms and other space events can release large magnetic storms that can interact with the magnetosphere around the Earth. When this happens, violent energetic discharges can impact the Earth and cause havoc with satellites and power grids. These events are caused by the crossing and reconnecting of magnetic field lines traveling in opposite directions, but exactly how this magnetic reconnection occurs has been under study for 50 years. Scientist have known about one method, but it’s too slow to account for the violent energy release. Burch and Drake discuss the history of this research, the newest theories for the mechanism behind magnetic reconnection, and an upcoming space mission to learn more.

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