The gas giant planet Jupiter is well-placed in the western sky at dawn: at over ten times larger than the Earth, it reflects a vast amount of sunlight and is a super bright object. It has dozens of 'moons', including four really large ones that (along with Saturn's rings) were among the first discoveries made by Galileo with his primitive telescope.
This morning Ganymede was lurking behind Jupiter, but the other three Galilean Moons were easily visible with binoculars.
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