Hello again! I am back coding after a festival and being ill… again :( … but its working now! I have achieved my goal of getting a planet orbiting a star. My physics loop actually allows me to add as many bodies as I want which is really satisfying- I got over the initial ‘what on earth am I doing’ and now I can go crazy with random coloured dots flying around my screen :) As I currently have to add bodies manually during the code, I need to add user input next. (then I will probably start using a higher level library like I said in my last post… probably.)