The Juno spaceprobe (above) is just an hour away from orbit insertion around Jupiter. Juno has been in transit, waiting for this day, for almost five years. Juno is solar-powered, with huge 9-metre-long solar panels, to compensate for the fact that the intensity of sunlight around Jupiter is only 4% of what it is here.
Update 1: Juno is into its orbit insertion burn, screaming past Jupiter at a distance of 5,000 km and a velocity of 208,000 km/hr.
Update 2: Engine off. “Juno, welcome to Jupiter!” (NASA/JPL clapping)