Jupiter's moon count reaches 95+ official satellites. Explore the history of the Jovian system, from Galileo to the latest NASA discoveries.
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The moon: Facts about our planet's lunar companion
The moon is our constant companion and the only natural object that always orbits Earth. It's about four times smaller than Earth and its gravity is much weaker, which is why astronauts bounce around ...
July will be a busy month in the cosmos. The month will kick off with Mercury at its greatest eastern elongation, followed by the Buck Moon, and will conclude with the Delta Aquariid meteor shower.
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