Photo By VinceVarnas, Oregon FishOutofWater
Electric blue clouds, literally at the edge of space, have been recently seen glowing in the dark from Oregon to Colorado to Virginia, further south than they have ever been seen. Noctilucent clouds were first reported in the far north after the Krakatoa eruption. Until the last several decades they were always seen north of 50 N Latitude. No one is sure why the clouds are moving south but global warming is a suspected cause.