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Titan is Saturn's largest moon. It is surrounded by a thick, golden haze, and only certain kinds of telescopes and cameras can see through the haze to the surface. Titan is of great interest to scientists because it has flowing liquids on its surface and a dense, complex atmosphere.One day on Titan (the time it takes for Titan to rotate or spin once) takes about 16 Earth days. The length of Titan's day is the same as the amount of time it takes Titan to orbit Saturn. Saturn makes a complete orbit around the sun (one Saturn year) in about 29 Earth years (10,759 Earth days).Like many other moons (including Earth's moon), Titan is locked by gravity to its planet so that the same side always faces toward Saturn.Titan has been called the most earthlike world in the solar system because it has lakes, seas and flowing rivers on its surface, although the liquid is methane (CH₄) and ethane (C₂H₆) instead of water.Like Earth, Titan's atmosphere is mostly nitrogen (N₂). It also contains small amounts of methane and other complex hydrocarbons. Titan's atmosphere is slightly denser than Earth's.
Scientists who study living things do not think life as we know it is likely on Titan's surface. Some scientists think Titan's subsurface ocean might contain a habitable environment.

 

Does Titan has oceans or rivers??

Using incredibly precise measurements from NASA's Cassini spacecraft, researchers have concluded that Saturn's biggest moon is likely hiding a global, sub-surface water ocean, 100 km beneath its surface.

One of the most enigmatic bodies in our solar system just got even more intriguing.

Cassini has flown by Titan more than 80 times since entering Saturn's orbit in 2004, and its observations have confirmed that, as moons go, Titan is a weird one. It's bigger than the planet Mercury. It's the only moon with a real atmosphere (an atmosphere denser than Earth's, in fact). It experiences Earthlike weather, such as rain and snow. It's home to familiar geological features like valleys, plains and deserts — and it's the only known object besides Earth with standing bodies of liquid on its surface.

And yet these observations, while numerous, have all been skin deep. "In contrast," writes planetary scientist Luciano Iess, in today's issue of Science, "information on the moon's deep interior is scarce."

One does not simply drill into Titan, and there are no geologists on the moon's surface to measure its seismic waves. The absence of a detectable internally generated magnetic field means that everything we know about the interior of Titan has come from careful analysis of its orbit, rotation, gravity and topography. Fortunately for clever scientists everywhere, careful analysis can reveal incredible things.