NASA’s Cassini spacecraft sped by the moon Titan on Saturday, using the hazy world’s gravity to slingshot the probe on a trailblazing trajectory to explore the region between Saturn’s hydrogen-helium atmosphere and the planet’s famous rings for the first time.

https://spaceflightnow.com/2017/04/24/cassini-sails-by-saturns-moon-titan-for-last-time/