Describes the mission of Magellan, the interplanetary spacecraft designed to permit detailed radar mapping of the surface of Venus.


The Hubble Space Telescope

by Gregory Vogt and G Vogt

Published 1 March 1992
Describes the design and function of the Hubble Space Telescope, its initial problems, and plans to repair it.

Voyager

by Gregory Vogt and In Space, 1

Published 1 October 1991