" " NASA's Hubble Space Telescope captured this image of Saturn July 4, 2020. Two of Saturn's icy moons are clearly visible in this exposure: Mimas at right and Enceladus at the bottom. This image is taken as part of the Outer Planets Atmospheres Legacy (OPAL) project. NASA, ESA, A. Simon (Goddard Space Flight Center), M.H. Wong (University of California, Berkeley), and the OPAL Team There's a race happening in our solar system, but it has nothing to do with gravitational mechanics or velocity. Astronomers who study the gas giant planets of Saturn and Jupiter are in a close competition to see who can discover more moons. At this point, ringed Saturn is in the lead — but exactly how many moons does Saturn have? And how does that compare to massive Jupiter's count?