This was
your sky.

A Luminous Night

On January 16, 2013, a rare electric blue glow spread along the shores of Victoria Lake. This digitally stacked long exposure recorded the bioluminescence of Noctiluca scintillans, plankton stimulated by the lapping waves. Above, the night skies of the Gippsland Lakes region, Victoria, Australia, shine with a fainter greenish airglow. Oxygen atoms in the upper atmosphere, initially excited, cause this glow.