in space exploration, either of a pair of robotic U.S. interplanetary probes launched to observe and to transmit information to Earth about the giant planets of the outer solar system and the farthest reaches of the Sun’s sphere of influence. ... It sped by Jupiter on July 9, 1979, and passed Saturn on August 25, 1981.
www.britannica.com/EBchecked/topic/633197/Voyager
Voyager 1 - Wikipedia, the free encyclopedia
The Voyager 1 spacecraft is a 722-kilogram (1,592 lb) robotic space probe of the outer Solar System and beyond, launched September 5, 1977. It remains operational, currently pursuing its extende...
en.wikipedia.org/wiki/Voyager_1
Exploration of Jupiter - Wikipedia, the free encyclopedia
The exploration of Jupiter has to date been conducted via close observations by automated spacecraft. It began with the arrival of Pioneer 10 into the Jovian system in 1973, and, as of 2008, has c...
en.wikipedia.org/wiki/Exploration_of_Jupiter
A space probe is any unmanned spacecraft designed to carry out physical studies of the Moon, other planets, or outer space. Space probes take pictures, measure atmospheric conditions, and collect soil samples ... The Viking probes reported on the Martian weather and photographed almost the entire surface of the planet.
www.scienceclarified.com/Ro-Sp/Space-Probe.html www.scienceclarified.com/Ro-Sp/Space-Probe.html
Because Jupiter is a gas giant and doesn't have a rock surface for a space probe to land on.
http://wiki.answers.com/Q/Why_can't_a_space_probe_land_...
Starting in the late 1960s, scientists from the National Aeronautics and Space Administration (NASA) and engineers at California Institute of Technology's Jet Propulsion Laboratory (JPL), which operates under contract to NASA, began planning to send the first space probes past Mars to Jupiter and beyond.
www.centennialofflight.gov/essay/SPACEFLIGHT/outer_plan... www.centennialofflight.gov/essay/SPACEFLIGHT/outer_planets/SP30.htm
In the decade following Sputnik I, the United States and the USSR between them launched about 50 space probes to explore the moon. ... In 1974, Pioneer 11 photographed Jupiter's equatorial latitudes and its moons, and in 1979 it made the first direct observations of Saturn. Voyagers 1 and 2, which were launched in 1977,
www.infoplease.com/ce6/sci/A0861220.html
Subject: The Dark Side of the Moon ... Date: Tue Aug 11 20:19:07 1998; ... Hi: Is the dark side of the moon always dark? A work mate and I are in disagreement. One of us holds that the moon rotates about it's axis in such a way (once per revolution around the earth) that one half is always pointing away from the sun and...
www.madsci.org/posts/archives/aug98/902961106.As.q.html
Imagery from NASA's Cassini spacecraft has been used to generate a global movie of planet Jupiter with its colorful bands of clouds swirling in motion. PLAY (141k QuickTime file) ; Cassini, as it approached Jupiter, detected waves in the thin gas of charged particles that fills the space between the Sun and its planets.
spaceflightnow.com/news/n0012/30flyby/ spaceflightnow.com/news/n0012/30flyby/
Space probes have also been aimed at the outer planets, ... In 1974, Pioneer 11 photographed Jupiter's equatorial latitudes and its moons, and in 1979 it made the first direct observations of Saturn. Voyagers 1 and 2, which were launched in 1977, took advantage of a rare alignment of Jupiter, Saturn, Uranus,
reference.allrefer.com/encyclopedia/S/spaceexp-satellit... reference.allrefer.com/encyclopedia/S/spaceexp-satellites-and-probes-interplanetary-probes.html