Yep, all open source: https://github.com/gordonhart/atlasof.space

It's a static React app using Three.js for rendering and a few backend functions deployed on Netlify. It's been a pretty great experience deploying to Netlify, though I didn't expect the attention from HN to go way over my 100GB of free tier bandwidth!

That's pretty cool. Hopefully you were not billed too much

Will take some time to dig in the code, always wanted to try out threejs.

Thank you