Exoplanet Aurora: An Out-of-this-World Sight
21 Jul 2011, 13:17 UTC
David A. Aguilar (CfA)
July 21, 2011: Earth's aurorae, or Northern and Southern Lights, provide a dazzling light show to people living in the polar regions. Shimmering curtains of green and red undulate across the sky like a living thing.
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