How long does it take to get to mars!?

Question

my friend really wants to know!

Answer 1

Typically an unmanned probed takes 9 to 11 months to reach Mars on a minimum energy, fuel-efficient trajectory. It is hoped that crewed missions can have the time reduced to 6 months (in each direction) in order to minimise the time spent in micro gravity and the exposure to solar and cosmic radiation.

Answer 2

Mars takes about 1.88earth years to go round  the sun.Earth one year.So only once in two years mars come closer to earth. So we have to calculate the best time to launch the space ship so that by minimum travel we reacvh mars.

More over, we dont go to mars by continuosly firing the rocket. We can not do that!!

We have to use gravity.

Minimum time to reacvh mars will be about 6months.But return will take more time as two planets get seperated as both are moving at different speeds.

Answer 3

I think it takes 6 months to get there using a Holmann transfer, which is the most fuel-efficient method.  Since we rely on low-energy chemical reactions to power our space ships, a Holmann transfer is required.  With nuclear rockets would be able to shave as much time from that as we wished, depending on cost.  Using a Holmann transfer, a launch window to Mars only opens once every 2 years, so it could take a maximum of two and a half years to get there, but no less than 6 months.

Answer 4

It depends on how fast you go and how close the planets are at the time of launch. ( Actually its more complex than that)  How fast you go depends on how much fuel you are willing to use, and that depends a lot on your budget. A lot depends on your technology.  Life support is also important.  The lunar missions only took a week or so.  Going to mars involves perhaps 6 months each way.  We really don't know to to provide life support for extended missions that would require recycling of air, water, and food..  It isn't a trivial problem.  Carrying ALL the air, food, and water for the trip involves tremendous amounts of supplies which weigh a lot, take up a lot of space and have to be shipped into orbit, which costs a fortune..  Recycling makes more sense but we don't know how to do that.