# What space simulators are the most accurate at simulating real world physics?

We've all at least heard of KSP, a popular space flight simulator. its not the best but can teach someone the basics at rocket science, delta V, burntime, basic orbital maneuvers, retrograde, prograde, etc. but we all know its also not very accurate, because of how it has on rails and physics simulations at once.

by accurate i mean most similar to real life ex: in KSP atmospheric drag just cuts off in this more accurate simulation it is a long gradient.

My question is what simulations are more accurate at simulation?

• Are you asking about commercially available simulations? NASA has some good ones for training the crew. Mar 27, 2020 at 18:03
• really just what ones are the best Mar 27, 2020 at 18:04
• ive clarified it a bit Mar 27, 2020 at 18:15
• It is probably worth noting that KSP can be made significantly more accurate with mods. Principia adds full Newtonian gravity, and FAR adds a more realistic aerodynamics model Mar 28, 2020 at 18:32
• @OscarSmith what does "full Newtonian gravity" mean exactly? When I hear that I assume that there are no more patched conics and it's full n-body, since Newton's gravitational force falls of as $1/r^2$ it never goes to zero. Is that really what Principia adds? fyi I've asked Will Kerbal Space Program 2 have Lagrange points, halo orbits, and other 3-body goodies?. It was well received but currently closed as "primarily opinion based" but I think it can be reopened if there is some news! update: Oh, Principia was mentioned there already.
– uhoh
Mar 29, 2020 at 18:49

Well, I think this is a good question.

Orbiter 2016 and its 2006 and 2010 predeccessors are fairly realistic spaceflight simulators.