Sulfur Cycle Planetary Composition Gas Giants Migration Theory Orbital Dynamics Water Distribution Water in Exoplanets Water in Planetary Cores Orbital Motion IRAS 04125+2902 Transiting Planets IRAS 04125+2902b Metallicity HR 8799 James Webb Space Telescope Detection Methods HR 8799 System Protoplanetary Disks Orbital Period Chemical Composition Interaction with Other Planets Water-rich Atmosphere