Sorry, you must have the wrong number <a href="http://www.formbysurveys.com/geyimedicalcom-74c8.pdf#easel">digitalhealthsot.nhs.uk</a>  Voyager 1 discovered that Saturn's atmosphere was almost entirely made of hydrogen and helium gas, making it the only planet less dense than water. The spacecraft was then diverted towards Titan, one of the planet's moons. After its fly-by of Saturn, Voyager 2 headed for Uranus and Neptune.