EPIC RED AIRGLOW: It looks like auroras, but it's not. On Oct. 12th, photographer Ruslan Merzlyakov went to Thy National Park Thy in northern Denmark for a good view of the Milky Way. This is what he saw instead:

[imgur] [link to i.imgur.com (secure)]

"To my surprise, this epic red airglow rippled across the entire sky," says Merzlyakov.

Airglow is caused by chemical reactions in the upper atmosphere.

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