Quoting from this site:
Terrestrial rocks blown into space by asteroid impacts on Earth could have taken life to Saturn’s moon Titan, scientists have announced.
Earth microbes in these meteorites could have seeded the organic-rich world with life, scientists believe.
They think the impact on Earth that killed off the dinosaurs could have ejected enough material for some to reach far-off moons like Titan.
Hee hee, how cool is this? As Cassini gets out there to have a look around–somebody might be looking back!!