<P> Titan is primarily composed of water ice and rocky material . Much as with Venus before the Space Age , the dense opaque atmosphere prevented understanding of Titan 's surface until new information from the Cassini -- Huygens mission in 2004 , including the discovery of liquid hydrocarbon lakes in Titan 's polar regions . The geologically young surface is generally smooth , with few impact craters , although mountains and several possible cryovolcanoes have been found . </P>
<P> Titan is primarily composed of water ice and rocky material . Much as with Venus before the Space Age , the dense opaque atmosphere prevented understanding of Titan 's surface until new information from the Cassini -- Huygens mission in 2004 , including the discovery of liquid hydrocarbon lakes in Titan 's polar regions . The geologically young surface is generally smooth , with few impact craters , although mountains and several possible cryovolcanoes have been found . </P>
what is saturn 's moon titan made of
what is saturn 's moon titan made of
water ice and rocky material
water ice and rocky material