Adrastea is the second by distance, and the smallest of the four inner moons of Jupiter. It was discovered in Voyager 2 probe photographs taken in 1979, making it the first natural satellite to be discovered from images taken by an interplanetary spacecraft, rather than through a telescope.
It was officially named after the mythological Adrasteia, foster mother of the Greek god Zeus-the equivalent of the Roman god Jupiter.
Adrastea is one of the few moons in the Solar System known to orbit its planet in less than the length of that planet's day. It orbits at the edge of Jupiter's Main Ring and is thought to be the main contributor of material to the Rings of Jupiter. Despite observations made in the 1990s by the Galileo spacecraft, very little is known about the moon's physical characteristics other than its size and the fact that it is tidally locked to Jupiter.
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The Wonders
Non-FictionA book about the wonders of space. If you're looking to find about how supernovas, black holes and other stuff are made, you found the right book. Unfortunately, since I'm not creative enough, most of these definitions will be coming from the Wikipe...
