A trip to Mars at modern speeds is about 7-8 months, but this is quite variable. You could get there in about 2 months if you went really fast, but no such prop

A trip to Mars at modern speeds is about 7-8 months, but this is quite variable. You could get there in about 2 months if you went really fast, but no such propulsion system currently exists to my knowledge. However, we are talking about propulsion systems as they will exist in 15-20 years, so perhaps something like 4-6 months is a reasonable estimate of trip duration. Edit: There's that famous "40 days to Mars" study from a while ago about theoretical new rockets: http://www.space.com/8009-rocket-engine-reach-mars-40-days.html http://www.space.com/8009-rocket-engine-reach-mars-40-days.h...