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Kind: Outer Solar System andheliosphere exploration

State: Successful

Place: Jupiter

Operator: NASA / ARC

Instruments: 1) Helium Vector Magnetometer, 2) Quadrispherical Plasma Analyzer, 3) Charged Particle Instrument, 4) Cosmic Ray Telescope, 5) Geiger Tube Telescope, 6) Trapped Radiation Detector, 7) Meteoroid Detectors, 8) Asteroid/Meteoroid Detector, 9) Ultraviolet Photometer, 10) Imaging Photopolarimeter, 11) Infrared Radiometer,



Duration: 30 years, 10 months, 22 days

Mission Ending

Last Contact: Last telemetry April 27, 2002, last signal received January 23, 2003 (2003-01-23)


Rocket: Atlas SLV-3C Centaur-D Star-37E

Kind: NASA / ARC

Manufacturer: TRW

Mass: 258.8 kilograms (571 lb)

Launch Site: Cape Canaveral LC-36A


1º Flyby: Jupiter


"You’re going very fast when you’re on orbit, going around the world once every hour and a half." - Robert Crippen


"The journey, not the arrival, matters; the voyage, not the landing." - Paul Theroux

Pioneer 10 (originally designated Pioneer F) is an American space probe, launched in 1972 and weighing 258 kilograms (569 pounds), that completed the first mission to the planet Jupiter. Thereafter, Pioneer 10 became the first of five artificial objects to achieve the escape velocity needed to leave the Solar System. This space exploration project was conducted by the NASA Ames Research Center in California, and the space probe was manufactured by TRW Inc. Pioneer 10 was assembled around a hexagonal bus with a 2.74-meter (9 ft 0 in) diameter parabolic dish high-gain antenna, and the spacecraft was spin stabilized around the axis of the antenna. Its electric power was supplied by four radioisotope thermoelectric generators that provided a combined 155 watts at launch. It was launched on March 2, 1972, by an Atlas-Centaur expendable vehicle from Cape Canaveral, Florida. Between July 15, 1972, and February 15, 1973, it became the first spacecraft to traverse the asteroid belt. Photography of Jupiter began November 6, 1973, at a range of 25,000,000 kilometers (16,000,000 mi), and about 500 images were transmitted. The closest approach to the planet was on December 4, 1973, at a range of 132,252 kilometers (82,178 mi). During the mission, the on-board instruments were used to study the asteroid belt, the environment around Jupiter, the solar wind, cosmic rays, and eventually the far reaches of the Solar System and heliosphere. Radio communications were lost with Pioneer 10 on January 23, 2003, because of the loss of electric power for its radio transmitter, with the probe at a distance of 12 billion kilometers (80 AU) from Earth.