Auroras Poised to Collide
Auroras Poised to Collide

A fast-moving knot of auroras is poised to collide with a slower moving curtain hanging over the Arctic. THEMIS all-sky imagers (ASIs) photographed the collision on Feb. 29, 2008.
Credit: Toshi Nishimura/UCLA

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Page Last Updated: September 26th, 2013
Page Editor: Holly Zell