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
1953 illustration of a "Thousand-Year Space Ark" for Science-Fiction Plus magazine by Alex Schomburg
Project Orion was a study conducted in the 1950s and 1960s by the United States Air Force, DARPA, and NASA into the viability of a nuclear pulse spaceship that would be directly propelled by a series
Interstellar ark
…to preserve civilization and knowledge in the event of a global catastrophe. Such a ship would have to be large, requiring a large power plant. The Project Orion concept of propulsion by nuclear pulses has been proposed. The largest spacecraft design analyzed in Project Orion had a 400 m (1,300 ft) diameter and…
NASA artist rendering, from 1999, of the Project Orion pulsed nuclear fission spacecraft
Frederick Reines, early 1950s, photo from Los Alamos
Freeman Dyson in 2005
Ted Taylor in 1965