A Gripen D fighter jet pierces through the clouds above southern Sweden and is soon cruising at nearly the speed of sound.

New photographs taken from a fighter jet above massive wildfires raging along the California-Oregon border show the formation of so-called "fire clouds," which can introduce pollution and smoke ...

Jet streak led to a huge arc of cirrus clouds appearing over North America. The NASA image was taken on November 28. NASA Earth Observatory. The image of cirrus clouds above North America was ...