In article ,
Joe Strout wrote:

But one thing puzzles me about the original painting: where are
the radiators? Would a habitat of this size need to have substantial
radiators to get rid of excess heat?

Never mind -- since sending this post to the moderator, I noticed the
radiators in the painting -- a dark reddish square sticking out away
from the "camera" from the central stalk on the back side of the
habitat. They're almost edge-on since they're pointing directly in line
with the sunlight, as one would expect.

Best,
- Joe