The aftermath
Ben Bova
Moonrise
Moonwar
Orion in the dying time
Orion and the Conqueror
Orion Among the Stars
The Trikon Deception
Ben Bova & Bill Pogue
The Exiles Trilogy
The Watchmen
The Precipice
Vengeance of Orion
Voyagers III: Star Brothers
Mars
Venus
Forward in Time