Subject: Time: 17:22 OFFICE MEMO Lucid time dilation Date: 96/10/01 Randy Parker wrote: I'm wondering, since Shannon Lucid spent 6 months or so traveling at 5 miles per second, how much did time slow down for her as compared to her earthbound neighbors? The answer: not much! If memory serves, the equation for the amount of time she "gained" on her earth-bound neighbors would be: 188 days * (1 - SQRT(1 - v^2/c^2)) When v is very small compared to c, this equation reduces to: 188 days * v^2/ (2*c^2) Assuming v is 8 km/sec and c is 30000 km/sec, the time gain would only be about 0.58 seconds. --Rob