Am I the only one who can envision those simply being poor pictures taken of a beautiful snowy Northern sky? Yeah as I admitted it doesn't work well on a cell phone camera. Snowguy's is much better.
Also serves as a nice contrast to the depressing as hell daytimes that are just white and dreary with the sun hard to see and everything white and bland. At night the sky is somewhat illuminated and it's actually lighter than summers, which is part of why winter nights can see kind of festive in Minnesota.