Other fut coins players will help in exploration too. A galactic map visible to all players will document planets and regions to visit, both discovered and unexplored, for all players. Upon visiting an undiscovered location, players may then choose to share that information with others through the galactic map or not.
Murray likens it to the crafting in Minecraft, where some players would purposely choose not to share formulas with other players. So you can have as little or as great an affect on the universe for other players as you see fit. The game will be in a state of flux and I think that makes it really exciting. You can get that real feeling of discovery that you havent had in a game before. And thats interesting, because we wont have seen everything in the game when it releases not by a long, long shot.