Eve is a murder/capitalism simulator and has almost no physics in the first place. (There's 3-dimensional positioning, but you can fly through planets and shoot through other ships as much as you like; also the entire world is static.)
No Man's Sky is 90% an art piece with some added murder simulation.
Elite: Dangerous, also a murder/capitalism simulator, only unlike Eve it's more about the immediate visceral.
Notably all three of those pretend space ships are, like WW2 planes, subject to air drag, have a terminal velocity and have no automation on-board whatsoever, and astronomic physics aren't even considered in the first place. These games are literally WW2 fan fics in "space". (Or really, ether, as old-timey people thought of what's between planets.)
If you're looking to teach physics and astronomics, Kerbal Space Project does that quite well, even though it also ignores relativity and speed of light considerations.
More importantly, none of these games are even remotely able to tackle the topic of civiliations and saving them, which won't be done with a gun, but with the word. The closest thing i can think of to that are the Mercenary games: https://en.wikipedia.org/wiki/Mercenary_(video_game)
Edit: Not saying that the three mentioned are bad games, just that they can't be taken seriously as space games.