is it possible to create environment on the mars by super green house...

[aditya s]

...gases, what mars has the magnetic field? i heard that we can from a environment on mars to make it life full is it possible to create environment there by super green house gases, and what mars has the magnetic field like earth to stop the solar wind by entering in to the mars atmosphere so that it wont take the gases out of the mars magnetic field

[vorenhutz]

mars' magnetic field is very weak and likely due to magnetised crust rather than an internal dynamo. it doesn't really put a dent in the solar wind. however if gases could be added to mars' atmosphere sufficient to create a habitable environment in a "short" timeframe of a few hundred years, it would seem to be little additional problem to keep adding gases from whatever source to "top up" losses due to solar wind.

[Michael Steen]

I would add that, in addition to a weak magnetic field, Mars has much weaker gravity than Earth. So I would imagine that, no matter what you did, air pressure at the surface would be much lower than Earth's. How much lower I can't say, but I would imagine you'd not get much more air pressure than you'd find at the top of Everest. In that case, you'd either need oxygen on the best days, or you'd have to wait many generations until colonists adapted to the reduced air density.