The shader was inspired by NASA's recently-released images of the unseen universe.

Procedural Artist Mrmo Tarius demonstrated an amazing Blender-made nebula shader, inspired by NASA's recently released photos of the unseen universe made with the James Webb Space Telescope. The scene itself consists of a single sphere and a Signed Distance Field-based shader material. According to the artist, the shader relied heavily on post-processing and took half an hour to render with around 6 seconds per frame.

And here are NASA's pictures of the unseen universe that inspired the author:

You can check out more of Mrmo's projects by clicking this link.