The brilliant green aurora borealis lit up the sky over a snow-covered Fairbanks, Alaska, on Tuesday,1. Photographer Vincent Ledvina captured stunning footage of the spectacle as it shimmered above ...

At the surface, Mars is a desolate, barren world with a rocky landscape, massive dust storms and extreme temperature swings. However, a rover recently captured a splash of color in the sky as rare ...

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...