NASA Scientists Explain Why Sun's Corona is So Much Hotter Than Its Photosphere

August 4, 2014 3:01 PM

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A scientific conundrum, NASA has finally come up with a solution to why the sun's corona, or outer atmosphere, is so much hotter than its surface.

Scientists at the space agency point to nanoflares, which cannot be detected individually though they provide extra heat in small, rapid bursts. This theory was generated thanks to just six minutes of footage Extreme Ultraviolet Normal Incidence Spectrograph (EUNIS) mission.

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