In this 2017 GDC talk, Hello Games' Innes McKendrick presents a study of the technical architecture of No Man's Sky, focusing in particular on the techniques used to generate planets and the supporting structures allowing this to happen continuously in real-time.

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""Procedural"" is a bit of a buzzword at the moment, but what does it
actually mean? A tiny team of artists at Hello Games is using procedural
technology to create the infinite worlds of No Man's Sky, and in this GDC 2015 talks, Art Director Grant Duncan describes their procedural journey so far, as well as show the tools and techniques they've used to bring technology and art together far closer than he ever imagined.