[Gys]

Its also the cover of a Joy Division lp. There might not have been a copyright.

See: https://blogs.scientificamerican.com/sa-visual/pop-culture-p...

[ox_n]

I saw a copyright on every version of that image I could find.

[kgwgk]

See also: https://adamcap.com/2011/05/19/the-history-of/ (mentioned in the Scientific American piece).