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thearn4
on June 10, 2014
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Some Emerging Possibilities For Space Propulsion
NASA used to have a small program to evaluate concepts for breakthrough propulsion, which ended around 2002.
http://www.grc.nasa.gov/WWW/bpp/
chroem
on June 10, 2014
[–]
Why not a fission fragment rocket? We could send a probe to the centauri system with current technology.
https://en.wikipedia.org/wiki/Fission-fragment_rocket
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