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4
votes
1answer
1k views

VASIMR - Earth to Mars in 39 days? [closed]

The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is currently in development and is anticipated to be tested on the International Space Station in 2015. I'm a huge fan of expanding space ...
6
votes
1answer
518 views

What percent of time is a rocket to the moon on the right trajectory?

I heard the following quote: "A rocket to the moon spends only 7% of the time on the correct course, the rest of the time it is off course and needs to be corrected and put back on course." This is a ...