‘Unreal’ northern lights cover Earth in stunning image captured by NASA astronaut

Seen from Earth, the northern lights are nothing short of dazzling. But it takes an astronaut’s eye view to really appreciate just how big and spectacular these light shows really are.

“Absolutely unreal,” NASA astronaut Josh Cassada tweeted (opens in a new tab) February 28 along with a lovely image of green aurora borealis swirling around the Earth’s northern latitudes. Cassada took the photo from the International Space Station, which orbits about 400 kilometers above Earth on average.

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