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Story summary
- Matija Cuk of the SETI Institute proposes Titan formed from a merger of two moons.
- The theory says an extra moon collided with Titan, enlarging Titan and tilting Saturn.
- Using data from NASA's Cassini Probe, the research suggests the collision helped form Saturn's rings.
- The study finds Titan's orbit became eccentric after the merger, triggering collisions among smaller moons that produced debris and some rings.
