Lakes up to 60 miles long have been discovered on Saturn's giant moon Titan.
Dozens of well-defined dark patches are shown in radar images from the Cassini spacecraft, which flew past Titan on July 22. Scientists believe they are frigid lakes consisting of liquid methane, or a combination of methane and ethane.
The smallest are 0.6 miles wide, while others stretch for nearly 20 miles. The biggest lake seen was about 62 miles long - five times the length of Lake Windermere.
Dr Steve Wall, deputy radar team leader at the American space agency Nasa's Jet Propulsion Laboratory in Pasadena, California, said: "This is a big deal. We've now seen a place other than Earth where lakes are present."
Scientists had been hunting for Titan's lakes, which had been predicted but not detected until now.
Titan, the only moon in the solar system with an atmosphere, is covered with dense smog, which makes surface features hard to see. Radar signals can penetrate through the clouds.
2006-07-31
10:58:39
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