What is the probability that a human can walk on Jupiter?

---- It's absoloutly impossible. 3 reasons are that firstly the planet has an atmosphere that is made up from gases that are deadly poisonous to a human. Secondly, the surface of Jupiter (and just about all of the rest of it too) is gaseous and the only "solid" part is a very small inner core. Thirdly, even if you could find a solid surface to stand on you would still die instantly because the pressure on Jupiter is so incredibly heavy that a human would be crushed and flattened like a ribbon instantly.