Gorgeous purple and gold auroras light up the sky in these stunning images taken during a geomagnetic storm.
Astrophotographer Ruslan Merzlyakov captured several images of the intense light show over Mors island in northern Denmark on Earth Day, or April 22.
"On [the] ground it was stormy - strong wind with average speed of 20 meters per second," Merzlyakov told Space.com in an email. "My carbon tripod was nearly blown away." [Aurora Photos: Amazing Displays from Solar Storms]
Vivid northern lights like those seen in this image are caused by charged particles from the sun (the solar wind) ...