Contrails conjure a sense of something overwhelming and ineffable, as terrifying as it is beautiful.

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

One witness in Havre de Grace, Maryland, recorded video of the eerie glow, showing the fireball resembled a silent explosion ...

A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars.

As a cloud comes out from behind the dark clouds into a bright blue sky, it is edged with a silvery lining. Thus we are moving from relative darkness into bright light and the meaning of the idiom ...

recorded the sky ablaze at 3:40 a.m. on Saturday, Feb. 1, the American Meteor Society says. Video screengrab A mysterious throbbing light seen racing behind clouds in the northeastern U.S. and ...