NASA - National Aeronautics and Space Administration - A beautiful aurora captured by NASA Astronaut Scott Kelly
A beautiful aurora captured by NASA Astronaut Scott Kelly aboard the International Space Station
is the effect of incoming energy and particles from the sun.
These particles trigger reactions in the upper atmosphere in which oxygen and nitrogen molecules release photons of light: http://go.nasa.gov/1MBdc8I
These particles trigger reactions in the upper atmosphere in which oxygen and nitrogen molecules release photons of light: http://go.nasa.gov/1MBdc8I
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