These Satellite Dishes Can See Electrons 100 km Away

Auroras are the result of particles colliding in the Earth's atmosphere, but how do scientists know that? How do we study auroras?

A Rare Look Inside The Doomsday Seed Vault Deep In The Arctic- https://youtu.be/uAl8dSpkNWs
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A Brief History of EISCAT
https://www.eiscat.rl.ac.uk/intro/history.html
"The aim of the association was defined as being "to make significant progress in the understanding of physical processes in the high latitude upper atmosphere by means of experimental programmes", utilising the technique of incoherent scatter."

What Causes the Northern Lights & Where to See Them
http://www.space.com/15139-northern-lights-auroras-earth-facts-sdcmp.html
"The northern lights, or aurora borealis, offer an entrancing, dramatic, magical display that fascinates all who see it - but just what causes this dazzling natural phenomenon?"

What are the Northern Lights?
http://www.bbc.com/news/science-environment-26381685
"The Northern Lights are caused by the interaction of the solar wind - a stream of charged particles escaping the Sun - and our planet's magnetic field and atmosphere."
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