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NASA Solves 30-year Mystery of Auroras

DailyTech – NASA Solves 30-year Mystery of Auroras

NASA used its five THEMIS spacecraft orbiting the Earth to spot the trigger for the substorms that cause the aurora to develop. The trigger was very strong energy bursts in the Earth’s magnetic field. The THEMIS probes monitored the level of energy in the Earth’s magnetic field. The probes were able to find substorms that originated in the tail of the Earth’s magnetosphere that flows away from the sun.

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