This Turquoise Gem Is What Summer Looks Like In Southeastern Alaska

Briefly: This turquoise gem is what summer looks like in southeastern Alaska. From an altitude twice that of commercial jets, NASA's arctic research aeroplane ER-2 — a civilian version of the Air Force's U2-S reconnaissance plane — captured this view of a summertime melt pond atop a glacier on July 16, 2014. [NASA Earth Observatory]

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