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Stories by Torrence V. Johnson6 articles archived since 1845

The Galileo Mission to Jupiter and its Moons

GALILEO SPACECRAFT, beset by technical troubles, still conducted a comprehensive study of the JOVIAN SYSTEM. Few predicted that the innards of these worlds would prove so varied

September 1, 2003 — Torrence V. Johnson

The Galileo Mission to Jupiter and Its Moons

Few scientists thought that the Galileo spacecraft, beset by technical troubles, could conduct such a comprehensive study of the Jovian system. And few predicted that the innards of these worlds would prove so varied

February 21, 2000 — Torrence V. Johnson

The Galileo Mission

From orbit around Jupiter, the Galileo spacecraft will take the closest look ever at the planet and its natural satellites

December 1, 1995 — Torrence V. Johnson

The Moons of Uranus

Voyager 2 photographed the five major moons at close range. All have icy surfaces, but they are darker and rockier than Saturn's moons. Early in their history three were geologically vigorous

April 1, 1987 — Torrence V. Johnson, Robert Hamilton Brown and Laurence A. Soderblom

Io

The solar system's most active volcanic world is a moon of Jupiter whose geyser like eruptions and massive lava flows yield evidence of exotic volcanic fluids. Their source of energy is gravitational

December 1, 1983 — Torrence V. Johnson and Laurence A. Soderblom

The Moons of Saturn

The 17 icy bodies that orbit the planet display a surprising range of geological evolution. Many of them show craters more than four billion years old, but one of them has terrain so new that no craters are seen

January 1, 1982 — Laurence A. Soderblom and Torrence V. Johnson

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