Physics calculations are renowned for using simplifications to approximate results.
That doesn't work for space. One cannot assume an object is a perfect sphere experiencing no friction and have any hope of success. And that's just the first of many forces that are dropped to make the math easy.
The physics calculations aren't what makes it run at 30fps; it's more the graphic rendering. Physics are easy to do. Making them look nice isn't.
What?
Physics calculations are renowned for using simplifications to approximate results.
That doesn't work for space. One cannot assume an object is a perfect sphere experiencing no friction and have any hope of success. And that's just the first of many forces that are dropped to make the math easy.