送交者: cornbug 于 2005-2-05, 12:52:19:
回答: 组图(5) 由 cornbug 于 2005-2-05, 12:50:39:
Saturn as seen from atop Titan's hydrocarbon haze
Saturn and its rings would be quite a spectacle viewed from just above Titan's hydrocarbon haze, 50 miles above Titan's surface and three-quarters of a million miles away from Saturn itself. This haze is chilled to a frigid minus 330º F.
In this image the presence of gaseous ethane and methane in Titan's upper atmosphere yields a bluish, earthlike sky, albeit darker due to Titan's great distance from the sun.