Model of the Voyager space probe.

Model of the Voyager probe. The Voyager 1 and 2 probes were launched on 5 September 1977 and 20 August 1977 respectively to study the giants of the solar system. Although launched sixteen days after Voyager 2, Voyager 1's trajectory was a faster path, arriving at Jupiter in March of 1979. Voyager 2 arrived about four months later in July 1979. Both spacecraft were then directed on to Saturn with arrival times in November 1980 (Voyager 1) and August 1981 (Voyager 2). Voyager 2 was then diverted to the remaining gas giants, Uranus (January 1986) and Neptune (August 1989): The last two spacecraft of Nasa's Mariner series, Voyager 1 was the first in that series to be sent to explore the outer solar system