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Throughout its fortieth shut move above Jupiter’s cloud tops, NASA’s Juno orbiter captured a spectacular picture of Ganymede’s shadow from a distance of about 71,000 kilometres (44,000 miles), 15 occasions nearer than the moon’s 1.1 million kilometre (666,000 mile) orbit. The elongated shadow marks a complete eclipse of the Solar, a phenomenon that happens rather more regularly on Jupiter than on Earth because of its 4 Galilean moons. Such “shadow transits” throughout Jupiter are frequent targets for newbie astronomers, however the distance between the large planet and Earth scale back these shadows to small black dots. From Juno’s perspective, the view is rather more spectacular. This enhanced color picture was processed from JunoCam information by citizen-scientist Thomas Thomopoulos.
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