So you're thinking about going to Mars? You're certainly not alone -- we've been talking about going there since the first men landed on the Moon and the whole world shouted "Again!" It would solve so many of our problems: overpopulation, resource scarcity, your buddy's incessant demands to know where the green women at, etc. Hell, if Matthew McConaughey can do it, you better believe you can too. Why don't we do this thing already?
So many reasons!
4 We Still Don't Know How to Land on Mars
So, first problem, and it's kind of a big one: we can't actually land on Mars. "Sure we can," we hear you say, with the bluster of someone who gets their science news from a comedy website. "We've got rovers and shit down there!" Yeah, but landing a small robot isn't the same as landing a bunch of humans and a bunch of gear to make sure the humans don't die. Basically, the problem is that the atmosphere on Mars is way too thin to inflate the parachutes we would need to safely land anything heavier than Wall-E. That's why NASA has been doing so many parachute tests -- you know, like this one: