We see movie after movie, and some of them are awesome, some of them are just flat our ludicrous. But...on a serious note....why haven't we occupied space yet? What's holding us back? Is it simply money? Would money be the limiting factor? I don't think our technology is limiting us, as far as I can see we could successfully and effectively occupy space right now without any hassels. What are the challenges we need to overcome to occupy space like we do earth? 1. Gravity A. Solution: Rotate the station or ship. Rotating the station or ship causes objects to push against the hull. At a calculated rotation, a ship could 'simulate' gravity simply by rotating. 2. Resources A. Solution: Food, drinks, whatnot, would have to be grown in outer space. They 'could' be transported back and forth from Earth, but it would be much cheaper and more economic to grow our own foods in space. I imagine a floor or two, or three, of the station could be dedicated towards food production. 3. Navigation A. Solution: NASA has recently revealed an interesting way of using our own universe as our navigation, no extra stuff needed. We just use Pulsar Stars to pinpoint our location. 4. Fuel A. Solution: The problem is, most fuels aren't renewable. While we could import the fuel from Earth, I would think that mining certain chemicals from nearby planets would be more feasible, plus give us a great opportunity to study those planets as well. B. Problem: Without fuel, we can't fire thrusters, we can't power engines....we will die. 5. Power A. Solution: Several advancements in power utilization and consumption are on the rise. However, we haven't seen it come to light as of yet. One such solution would be the 3D alloy for bateries that increases a battery's power output by a very large factor. B. Problem: We're still using the old fashioned power sources generations old. We need something new that we can mass produce in space. 6. Protection A. Solution: Stations and ships can be equipped with weapons of such to protect against objects such as metors. B. Problem: Shooting crap in space can be very dangerous for everyone. 7. Money A. Solution: Star Trek uses a form of economy that doesn't use the monetary system. Instead everyone works for the good of the whole and generally loves what they do. They study for advances in knowledge and understanding, not for personal gain. B. Problem: Everything takes money because of the notion that everyone owes everyone else something in return for their services, which works. I do something, you pay me for it, I spend some time doing something for you, you pay me for it, I make a product, you pay me for it. With Supply and Demand, nearly everything in a space economy would be outrageously expensive unless a different monetary system is established to make the system functional. That's all I can think of off the top of my head. Does anyone else have any other ideas? Is there a group out there that's currently working on making this possible? Why do you think we haven't done this yet? What's holding us back?