You want gradual progression and new mechanics introduced over a 100+ hour game. You want some genuinely new and unique game mechanics and challenges.
You want a refined, balanced, cohesive experience from a minimal mod list. You want to explore new worlds, and new civilizations. Wiring a circuit condition to an inserter is too much for you. You don’t want to start a new game and you don’t like long games. You don’t care about game balance, and don’t want a mod to balance things. You want to use lots of mods at the same time, conflicting mods, or other overhaul mods. There may be occasional bugs, but they get resolved quickly. For this reason the mod is considered to be in Experimental Status (see below). There's a lot in the mod already, but it is still in heavy development and things are changing rapidly. You build an expansive space station as your main research facility, explore new planets and moons, outpost for special resources, and gradually progress into the darkness of deep space as you expand your interstellar empire.
After you launch a rocket you start discovering new planets, moons, asteroid belts, and other stars. Space Exploration is an overhaul mod about unique experiences and challenges. Warning: If you are on the experimental Factorio 1.1, there will probably be new bugs popping up over the next few days.
