NASA’s Cassini spacecraft has seen something never before seen on another planet – a mega anus. It is approximately 8,000 kilometers (5,000 miles) across, or two thirds the diameter of Earth.
http://saturn.jpl.nasa.gov/news/press-release-details.cfm?newsID=703
“At first it looked like a hurricane, but it didn’t behave like a hurricane,” said Dr. Andrew Ingersoll, a member of Cassini’s imaging team at the California Institute of Technology, Pasadena. “Then when the sun illuminated it fully we realized it was the largest anus any of us had ever seen.”
Located at the planets south pole it has evaded detection until now. “We have been seeing very high winds emanating from the South Polar Region for several years but we could not determine their origin until today.”
A movie taken by Cassini’s camera over a three-hour period reveals winds around Saturn’s south pole blowing clockwise at 550 kilometers (350 miles) per hour. The camera also saw the shadow cast by the actual anus.