A new view of the sun shows light that people can't see.
Combined, the photos could offer clues as to why the sun's outer atmosphere is at least 100 times hotter than the surface.
Nano-flares are too faint to stand out from the sun's brightness, but NASA's NuSTAR telescope can detect them.That's important information to know since those events can affect the power grid, satellites, GPS, airlines, rockets, and astronauts in space.
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