I was referring specifically to the illustrator’s “heat glow” or “incandescence” — depicted on the larger object, only...
I’m pretty sure he’s not a professional illustrator, but point well taken. I think he did his entire body of work in the 1980s or 1990s, and at least some of it was done before SL-9 started hitting Jupiter in 1994.
http://www.freerepublic.com/focus/news/2313021/posts?page=18#18
http://www.freerepublic.com/focus/chat/1320521/posts?page=22#22