I don't know if the physics are realistic, but Elite: Dangerous is the closest thing to a space flight simulator. Distance wise it's realistic at least, in that even with FTL speeds going 300x the speed of light you take forever to get to another planet.
The flight model in Elite is very much tuned for fun rather than accuracy. You can if you wish turn on a kind of newtonian physics flight model, but even then I very much doubt its representative of how actual objects in space would react.
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I don't know if the physics are realistic, but Elite: Dangerous is the closest thing to a space flight simulator. Distance wise it's realistic at least, in that even with FTL speeds going 300x the speed of light you take forever to get to another planet.
The flight model in Elite is very much tuned for fun rather than accuracy. You can if you wish turn on a kind of newtonian physics flight model, but even then I very much doubt its representative of how actual objects in space would react.
Another vote for Elite: Dangerous.
By default you get a "fighter-jet" flying model, which is an easy and necessary toggle to full Newtonian physics as the situation merits.
Your first line and third lines conflict with each other. AFAIK FTL travel is not possible.