The Voyager Mission Experience

Alan Stern, principal investigator for the New Horizon mission, reveals his biggest surprise so far as the probe closes in on Pluto.

The atmosphere of the planet Saturn has a wider, more intense jet stream than all the planets in the solar system. Winds gusting at speeds of up to 1,025 miles per hour blow from west to east in the equatorial atmosphere, thirteen times the strength of the most destructive hurricane force winds that form on the Earth’s equator.

Voyager 2 made its closest approach to Saturn 35 years ago — on 25 August 1981. What the Voyagers revealed at the planet was so phenomenal that, just one year later, a joint American and European working group began discussing a mission that would carry on Voyager’s legacy at Saturn.