Astronomy Picture of the Day

What type of cloud is that?

It is not a naturally occurring cloud rather resulted of a series of flares released by the jet seen in the background. The flares emit smoke that cause this type pattern sometimes known as “smoke angels,” which are caused by the vortex’s from the wingtips. (NASA/Wikipedia)

Airflow from the wingtip using colored smoke rising from the ground. (Wikipedia)

Cheers ~