 What didn't surprise Casey about Jupiter?
JUPITER'S JOKE By A. L. HALEY Casey Ritter, the guy who never turned down a dare, breathed a prayer to the gods of idiots and spacemen, and headed in toward the great red spot of terrible Jupiter. And instead, blast me, if they didn't foul me with this trip to good old Jupiter. Jupiter was a death sentence. "You've no doubt heard tales of the strange population of Jupiter," he said. Well, a cross between a scorpion and a grasshopper, to be accurate. Those emeralds were in the inner shrine of the super-sacred, super-secret temple of the cavern-dwelling tribe of Killicuts on Mars—the real aborigines.
 the aliens communicated by tapping
 the red coloring was plants  items could float in mid-air  the aliens could remove their eyeballs  the aliens communicated by tapping