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user: qunabu created: 2021-05-12 karma: 110 https://mateusz.wojczal.com/ submissions: 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments Show HN: Gravity – Interactive solar-system simulator, from Newton to Einstein 217 points | 56 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments WelLMS first open-source headless Learning Management System (LMS) 2 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments