| http://www.w3.org/ns/prov#value | - But once orbit was reached, a Photonic Rocket could accelerate at fairly low G for months, its fuel any sort of matter converted into pure energy, before the shielding layers became compromised: by the 80s, Mars and Venus were only weeks away, and even the outer planets only months???Of course, as SF biggie and increasing crank Larry Niven has pointed out, any sufficiently powerful propulsion syst
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