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How did the Hubble Space Telescope observe Xanadu Regio through Titan’s haze?
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Titan
Titan, moon of Saturn, photographed by Voyager 2 on August 25, 1981, at a distance of 907,000 km (564,000 miles). Green and violet images were combined to make this photograph, which shows the extended atmosphere of the satellite.
The Hubble Space Telescope was able to observe Xanadu Regio on Titan because the moon's dense haze is partially transparent to near-infrared light. By capturing images in these specific near-infrared wavelengths, the telescope could peer through the haze to reveal the bright, continent-sized surface feature.1