Hmm yeah, that could be a problem. I don't know Off-Planet Dumping and Space shipping Warehouse both come at Atronautics, which is way to early. The Warehouse would fit better at Spacestations or even Lunar Trade; the Off-Planet Dumping is something I'd rather remove from the game completely. Cosmonaut Training Center: Why do military units get trained 50% faster from this? Probably + XP for Space Units would be better. Altought, it's quite early for space units (that would need xp) would show up. Ion Propulsion is a prereq for Space Tourism, which I strongly disagree with. Ion Propulsion is for small probes that have a long flight time. For Space Tourism, the duration is quite short and the crafts have to be rather heavy. Orbital Factory at Magnetic Levitation (also Advanced Enviromental Systems) seems strange. Why Magnetic Levitation? That won't allow you to put things into orbit; and in zero g you don't need Magnetic Levitation. I'd say instead of Magnetic Levitation, Space Stations would be more suitable; possibly later. Space Elevator at Nanotech and Commercial Spaceflight is much too early. At least it should require Megastructures, too. I saw you have a National Wonder "Lunar Outpost". My plan was it to have a chain of Terrain Improvments that will finally allow a city to be built on it; one of them is a Lunar Outpost. I'm happy to change that, but maybe you have a good idea on how these could interact in some way? My goal was simply to have a machanism that would force you to commit a lot of resources (gold and hammers) before you can even found your first city.