Virgin Australia customer Ilya Katsman took her stunning snap en-route from Perth to Adelaide.
The photograph shows clouds in neat lines reaching far across the Great Australian Bight.
In fact, there’s something almost unnatural about the orderly gap between the clouds.
“The wave clouds are caused by air being forced up over a range of hills”
WA Bureau of Meteorology
Those who believe the theory claim high-flying planes spray chemical or biological agents into the air.
These agents enable mass psychological manipulation, population control and even weather modification, it’s claimed.
Such were the claims that erupted on Facebook when the airline shared Ms Katsman’s photo on its page.