Astronauts onboard the International Space Station (ISS) have seen a lot of auroras in recent months. They've even flown through some. Usually the lights are green; sometimes they're red. Other colors are rare. So when ISS science officer Don Pettit looked out the window on March 29th, 2003, and saw these striking blue-shaded auroras over Scandinavia, he had to grab his camera and take a picture.
NASA
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