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Show HN: Newton's Orchard – Browser-based space/gravity playground

newtonsorchard.app via Hacker News|Tuesday, September 1, 2026|about 7 hours ago|andrewchilds

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Key Claims

My son spent a lot of time in 5th grade playing with the 2-dimensional PhET gravity/space sims[1].
His STEM class uses it, and he was playing with it at home, and has been looking for more.
I found several space sims/playgrounds online, including NASA's Eyes on the Solar System[2], but nothing that seemed to offer a real progression from what he was getting out of the PhET sims, so I built Newton's Orchard over the summer for him.

Original description

Hi HN! My son spent a lot of time in 5th grade playing with the 2-dimensional PhET gravity/space sims[1]. His STEM class uses it, and he was playing with it at home, and has been looking for more. I found several space sims/playgrounds online, including NASA's Eyes on the Solar System[2], but nothing that seemed to offer a real progression from what he was getting out of the PhET sims, so I built Newton's Orchard over the summer for him. https://newtonsorchard.app The source is also published at https://github.com/andrewchilds/newtons-orchard It features...

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ID: 49524469 · Indexed about 2 hours ago