Players Can’t See Each Other When in the Same Area
When No Man’s Sky was first announced, Hello Games’ Sean Murray stated that though the chances of players meeting were very slim because of the size of the game, it wasn’t impossible. Players wouldn’t be able to know what they looked like, but they would be able to find out if another player managed to find them and see them.
However, it looks like it’s impossible to meet up with other players right now. Two Twitch streamers found themselves on the same planet on launch day, and tried all sorts of ways to meet up. They were definitely in the same location, but were unable to see each other. It’s not clear whether this ‘multiplayer’ feature has been completely removed from the game, or if the servers are just too overloaded right now for the devs to implement this feature properly, but it’s there.