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Continue to ChatNano-spacecraft: Alpha Centauri in 20 years? https://postcards.the1977project.org/2016/04/nano-spacecraft-alpha-centauri-in-20-years/
Nano-spacecraft: Alpha Centauri in 20 years? https://postcards.the1977project.org/2016/04/nano-spacecraft-alpha-centauri-in-20-years/