Elon Musk hopes to attain self-sustained life on MARS, it would require at least 40 - 100 years to achieve that .
To make colony on MARS , 80,000 to 100,000 humans would be needed which Elon believes possible to make .
EARTH to MARS Mission Architecture :
Facts on SpaceX's MARS Mission :
Why MARS ?
The nearest Planet which has atmosphere suitable for Humans to Live from Earth is MARS . The distance between MARS and Earth is also considered than to other Planet which are far away making it even more difficult to reach them .
The availability of CO in the MARS would help to make propellant to travel beyond or to & from earth .
By using Full Reusability SpaceX believe to reduce cost of travel as well as the efficient .
Refilling in orbit would help to reduce size of spaceship
Producing Propellant in MARS :
Propellant production on MARS would make it possible to humans to return to Earth when they need .
The Right propellant to be used for MARS Mission is CH4/ o2 which has following advantage over other propellants .
Booster to be used in the MARS Vehicle stands at 77.5m Height, with 12m diameter capable of carrying propellant mass of 6700 t .
Booster will return to earth within 20 - 30 minutes and lands vertifically , so that it can be reused to other launches .