CARLOS MUNOZ-YAGUE / EURELIOS / SCIENCE PHOTO LIBRARY CARLOS MUNOZ-YAGUE / EURELIOS / SCIENCE PHOTO LIBRARY
Torrence Johnson. Portrait of the American planetary scientist Dr Torrence V. Johnson, seen in front of Jupiter's moon Io. He is in charge of the Galileo space probe, the first artificial satellite of Jupiter, which has been orbiting since 1995 providing data about the planet and its moons. Dr Johnson also works on imaging for the Cassini mission to Saturn and the Voyager satellites. He received Exceptional Scientific Achievement Medals from NASA in 1980 for his studies of Jupiter's moons and in 1981 for his Voyager imaging work. Dr Johnson is at JPL, California, USA. Photographed in 1997.
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