Looking for a piece of the rocks: John S. Lewis has eyes for asteroids

Article Abstract:

University of Arizona's John S. Lewis proposed mining mineral resources from at the 1992 International Space Development Conference. For example, water extracted from asteroids can be used as a rocket propellant. Lewis feels that the study of non-terrestial materials will be the key to space exploration.

Research, Cover Story, Science and technology policy, Asteroids, Lewis, John S., Jr.

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By Jove! Galileo's finds were Jupiter's loves

Article Abstract:

Planetary scientists have long wanted to observe Jupiter's moons, but their distance from Earth made this difficult. New observations by deep space probes have provided scientists with a better look at these satellites, especially Io, Ganymede, Europa and Callisto.

Observations, Discovery and exploration, Europa (Satellite), Jupiter (Planet), Satellites, Jovian satellites, Io (Satellite), Callisto (Satellite), Ganymede (Satellite)

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