Science

so it can evaporate quickly into the thin atmosphere and get blown off by solar wind, destroying any extremophile life in the process..

I've got a better idea. Instead of letting a bunch of ignorant dudebros rush in with idiotic schemes that will foul up another planet in the name of terraforming it so they can create Galt's Gulch, why not accept the planet as it is, explore it with unmanned probes, and then consider whether or not our tech has advanced to the point small groups of scientists could be sent there to explore it more thoroughly.