Several years ago many people even think about traveling to space...but nowadays it's a reallity we can face everyday: cargo ships travelling to International Space Station, the International Space Station itself, first man on the Moon, etc. But our technology hasn't allowed us yet to travel to Mars for example, which is the nearest planet to us. So, the question is: do you think it will be possible before 2050 for example start the colonization of planets like Mars? Our planet is ill, everybody knows that, so, it's not an insane thing think about colonize other planets and go to live there...in a future....