Earth’s magnetic shield guards against solar storms, but captivating auroras reveal the cosmic dance with sun’s particles.

Each second, 1.5 million tons of solar material, traveling at 100 miles per second, shoot off the sun. Earth's magnetic field deflects most of it, but not all. The solar wind, a stream of charged particles, flows at 447 km/s (1 million mph), and while the magnetic field protects… pic.twitter.com/40CSNZYesU

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