"Titan presents an environment that appears to be unique in the solar system, with a thick, hazy atmosphere; a possible ocean of hydrocarbons; and a surface coated with precipitates from the atmosphere - similar to the scenario that scientists believe led to the origin of life on Earth. In the three centuries since the discovery of Titan, we have come to see it as a wolrd strangely similar to our own - yet located about one and a half billion kilometers from the sun" (Spilker). |