Perhaps reader Donald Peterson (AW&ST July 21, p. 9) has confused the current Orion space capsule with the 1950s/60s era Project Orion, an interstellar spacecraft powered by detonating atomic bombs and riding the blast waves, which is, I’m fairly certain, what reader Jeremiah Farmer was referring to (AW&ST June 30, p. 8). A 1968 study by Freeman Dyson ( calculated possible speeds of up to 10,000 kps., thus making a one-way trip to Alpha Centauri take ∼90 years, ...


"Time/Travel Route Change?" is part of Aviation Week & Space Technology’s subscription package. Click “subscribe now” below to view your options.  


Current Aviation Week & Space Technology magazine subscribers: simply use your subscriber email to log in to your account (or contact us for assistance in updating your account).
Current Aviation Week Intelligence Network (AWIN) enterprise and individual members: please go to for access.

Already registered? here.