that is indeed true that science is capable of achieving impossible things we had once only dreamt about or thought it was a silly thing to be happening. i believe to colonize mars is not that far impossible but rather quite challenging since there are so many thing to account fro such as resources, bare in mind that this one solely would be costly. also te distance and people's state of mind like experiencing something like outer space enviroment that is not everyone's cup of tea. for the most i suppose that there is no point in colonizing it. we must first take care of our homeplanet and then possibly be thinking of going outside or even building bridges between planets lol.