20 books in series

The Grand Tour

The Grand Tour is a 20-book series with 20 primary works first released in 1985 with contributions by Ben Bova.

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Powersat

Privateers
Mars
Moonrise
Moonwar
Jupiter
The Rock Rats
The Silent War : The Asteroid Wars III
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The Aftermath

Saturn
Leviathans of Jupiter
Titan
Mercury
Mars Life
Venus
The Return
Farside
New Earth
Earth
Uranus