In other words, Jupiter is all there is for Juno from here on in; the gravities of other celestial bodies, particularly the sun, will fade into nothing more than a distant whimper and Jupiter will now be in the orbital driving seat.
This gravity "handover" is the beginning of some big changes for Juno. On July 4 it will commence its orbital insertion maneuver around the gas giant, carrying out a jarring 35 minute main engine burn that will slow the speeding spacecraft down by 1,212 mph (or 542 meters per second), allowing Jupiter's gravity to guide Juno into its new orbital home. But this isn't a comfortable new home -- the orbit of Jupiter is wrought with radiation hazards and, though Juno has some complex shielding, this will inevitably take its toll and ultimately puts a shelf-life on the mission's duration.
