Helmut K. Wimmer Books

The nine planets
The nine planets

By Franklyn M. Branley

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Discusses the characteristics of each of the nine planets and explains the techniques used in the discovery and study of them.

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The Nine Planets Exploring Our Universe
Comets, meteoroids, and asteroids
Comets, meteoroids, and asteroids

By Franklyn M. Branley

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Discusses some of the lesser-known astronomical phenomena such as meteorites, asteroids, tektites, zodiacal light, solar wind, and cosmic rays.

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Skyguide
Skyguide

By Helmut K. Wimmer, Mark R. Chartrand

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Night Sky
Night Sky

By Helmut K. Wimmer, Mark R. Chartrand

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Exploring by Satellite

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