I’m not sure why, but when I try to look at my Solar System on code pen http://codepen.io/ledfordjs/full/nGdcu/ my phone will freeze and I have to restart my phone.
No nothing wrong with your code… other than the fact that it’s probably too graphically intense for slower CPUs. And actually some of this is probably passed on to your graphics card/on board GPU on a PC or laptop. Phones I don’t think handle animations the same way.