Holey Clouds: Gallery of Formations Cut by Airplanes

1 of 7

Heavenly Mystery

Credit: H. Raab User:Vesta
For decades, people speculated why strange gaps like this one, observed in 2008 over Linz, Austria, appeared in clouds. In 2010, researchers showed how airplanes might be responsible.
More from LiveScience
Author Bio

Wynne Parry

Wynne was a reporter at The Stamford Advocate. She has interned at Discover magazine and has freelanced for The New York Times and Scientific American's web site. She has a masters in journalism from Columbia University and a bachelor's degree in biology from the University of Utah.
Wynne Parry on
Contact wynne_parry on Twitter Contact Wynne Parry by EMail