withered by jupiter's harsh radiation and crash into ganymede. mission accomplished, calling baker audio, richard barnes, the lead engineer on an instrument being carried by the jews probe. he told us how the research data is being collected. the i work lead systems engineer on the j mac instrument, which is the not midterm on the ocean. underneath the ice cap, the on ganymede. the movement of these ions is that moves around the ocean. that generates a current and we can detect that current market so much. we can learn about the depth of the ocean and its properties as well just by looking at the magnetic field data. because our electronic box to sit on the body of the space cross inside a big boat is shield because radiation environment is very tough around. got, i mean, been described by the he didn't, she was trying to find a needle in the haystack, but the needle keeps changing, shape, and size. so it's a very small signal that we're trying to define because that a lot of other magnetic field information going on in cheaper to energy assistance . you got it. so magnetic field, ganymede, a mag