Intergalactic Space Travel??
How much energy would be required to accelerate you and your rocket ship (m = 1000 Kg) to 0.99c?
If you body can withstand acceleration only up to around a ~ 10g ~ 100m/s2, it will take about
Most of the energy must be supplied far from the earth - how to do this?????
Eadded = mc2 - m0 c2 = (? - 1) m0 c2
? = 7.09 Eadded = 6.09 m0 c2 Eadded ~ 6000 times annual output of large power plant
Time ~ c/a ~ 3,000,000 s ~ 0.1 years