While there may not be any multiplayer in No Man's Sky, you can see the footprints other players leave on the universe.
In your warp menu, there's an option to Scan for Discoveries.
Doing this will begin looking for nearby systems that other players have discovered. A lot of the times we've tried this, this scan brought up our own discoveries, but as we worked our way toward the Galactic Center, that changed.
Cycling through the Select Nearest option (right on the PlayStation 4 D-pad) will bring up nearby systems that other players discovered. Since there's no way for you to directly interact, you'll have to just take comfort in knowing that there's someone else out there, walking the same lonely path you are.
Since No Man's Sky lets players rename anything they discover, there's also a new option in the Library menu after you visit someone else's discovery. You can report offensive or inappropriate names here.
Would you like to know more?
No Man's Sky is a largely solitary experience, but you don't have to travel the universe alone.
This is just one small section of Polygon's No Man's Sky guide. Be sure to check out the rest, where you can learn all about your ship, your Multi-Tool and Companion Units and even get answers to some of the biggest questions about No Man's Sky. We also have a guide to No Man's Sky's resources that'll teach you the difference between Oxides and Silicates as we explain No Man's Sky's elements.
And if you're just looking for a quick reference guide to locations, like where you can save and trade — we've got you covered — too.