This was
your sky.

The Veins of Heaven

Transfusing sunlight through a darkened sky, this display of noctilucent clouds reflects in calm waters from Nykobing Mors, Denmark. These icy clouds are about 80 kilometers above Earth's surface, reflecting sunlight even when the Sun is below the horizon. Usually seen at high latitudes in summer, these night-shining clouds appeared early this year as northern nights grew short.