This artwork is by prolific American science fiction and comics illustrator Gray Morrow, whose lengthy list of illustrated publications can be found here. There’s a blog devoted to Gray Morrow’s work where this particular version of the image appears. The image itself is part of, and may have been cropped from, the artwork from the cover of Perry Rhodan #73: Spaceship Of Ancestors.
Image provenance by Bacchus at Erosblog.