NASA released on this past weekend some pretty interesting photos taken from the Cassini spacecraft as it passed by Saturn's big moon named Titan. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency.  The cost of the mission, which was launched in 1997, is pegged at $3.3 billion.  There will be a lot more photo opportunities for Cassini to photograph Titan during its four year mission, with an extra estimated 45 more flybys of the moon scheduled (coming within 600 miles of the moon). The Huygens probe will be sent into Titan's atmosphere in January, and will send pictures back to Cassini as it makes its descent by parachute.