 What convinces Casey Ritter to help the government by throwing himself into Jupiter’s Great Red Spot?
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. [Transcriber's Note: This etext was produced from Planet Stories Fall 1954. Sure, the crystals are deadly, but I was smuggling them legitimately, in a manner of speaking, for this doctor to experiment with. But—and this was the 'but' that was likely to deprive the System of my activities—even experimenting with them was illegal even if it needed to be done; also, I had promised not to rat on him before taking the job. 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. We possess well-authenticated photographs of these inhabitants, and if you are prepared to visit them and in some way worm from them the secret of their anti-gravity field, the government stands ready to issue you a full pardon as well as a substantial monetary reward. That whole Kooleen caper: Had it been just a trap to lead me straight to this? "So this is the great Casey Ritter, daredevil of the Solar System!" Me, Casey Ritter, slickest slicker in the Solar System, led like a precious infant right where I'd flatly refused to go!
 Pats Hoskins tells him that Jupiter’s scorpion race isn’t as harmful as previously thought, which makes Casey realize how easy it would be to earn the compensation the S.S. Court’s offered him if he completed the mission.
 Pard Hoskins tells him that Jupiter’s scorpion race is rich with emeralds, which makes Casey realize how easy it would be to caper the emeralds and collect the compensation the S.S. Court’s offered him for completing the mission.  Pats Hoskins tells him that Jupiter’s scorpion race isn’t as harmful as previously thought, which makes Casey realize how easy it would be to earn the compensation the S.S. Court’s offered him if he completed the mission.  Casey wants to earn back his honor as a dare devil by successfully tricking Jupiter’s scorpion race into selling him emeralds.  Casey wants to learn more about Jupiter’s scorpion race.