Could you stand on the surface of Jupiter? Exploring the enigmatic outer planets I get some pretty great questions from kids once they learn that I’m an astronomer. Several children have asked me if it is possible to stand on the surface of Jupiter. We know Jupiter has lots of clouds and a thick atmosphere. But if you went deep enough, and assuming you were not crushed by atmospheric pressure or the planet’s gravity, would you find land that you could stand on? To answer that question, we first need to peek under the clouds to get a feel for what these planets are like.As you descend into the atmosphere of the outer planets, two things happen: It gets hotter, and the pressure rises. Jupiter and Saturn are gas giants made of mostly hydrogen and helium. At a certain depth, the hydrogen, along with perhaps some liquid helium, compresses into an ocean. Jupiter’s ocean might be the largest in the Solar System, and it is so pressurized that the hydrogen loses its electrons, turning it into liquid metal. As it moves, this ocean creates an electrical current that gives Jupiter a magnetic field 15 times the size of the Sun. It is the largest magnetic field of any planet in the Solar System.
Continued here