Follow instructions explicitly. Run project in turbo mode (shift-click the green flag) The project may have errors/lag simply due to the nature of scratch; in the case of errors just run the project again. I am making a unity webGL which will have better results.
https://simmer.io/@eam834/3-body-figure-8-semi-stable ^figure 8 semi-stable orbit This is a cool physics simulation I made for a project, based on the classical physics 3-body problem.