Each day we feature a different image or photograph of our fascinating universe, along with a brief explanation written by a professional astronomer. Because of its thick cloud cover, however, Titan's actual surface properties remain mysterious. Voyager 1 flew by in 1980 taking the above picture, and recently much has been learned from Hubble Space Telescope observations . The Cassini mission currently scheduled for launch in 1997 will map Titan's surface, helping to solve some of its mysteries.
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