Enzmann starship
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Enzmann starships are concepts for a crewed interstellar spacecraft by Dr. Robert Enzmann. In the original design proposed in 1964, a three million ton ball of frozen deuterium would fuel nuclear fusi
Balloon satellite under test. A balloon built in space was to serve as Enzmann's fuel tank.
Interstellar ark
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An interstellar ark is a conceptual starship designed for interstellar travel. Interstellar arks may be the most economically feasible method of traveling such distances. The ark has also been propose
Enzmann starship
…would be modular, and the main living area would be three identical 300 feet (91 m) wide and long cylindrical modules. The Enzmann could function as an interstellar ark, supporting a crew of 200 but with space for expansion. The Enzmann starship was detailed in the October 1973 issue of Analog, with a cover by space…
1953 illustration of a "Thousand-Year Space Ark" for Science-Fiction Plus magazine by Alex Schomburg