Metis ( "MEE tis" ) is the innermost of Jupiter's known satellites:
Metis was a Titaness who was the first wife of Zeus (Jupiter).
Discovered by Synnott in 1979 (Voyager 1).
Metis and Adrastea lie within Jupiter's main ring. They may be the source of the material comprising the ring.
Small satellites within a planet's rings are sometimes called "mooms".
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Adrastea ("a DRAS tee uh") is the second of Jupiter's known satellites:
Adrastea, the distributor of rewards and punishments, was the daughter of Jupiter and Ananke.
Discovered by graduate student David Jewitt (working under Danielson) in 1979 (Voyager 1).
Adrastea is one of the smallest moons in the solar system.
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Amalthea ("am al THEE uh") is the third of Jupiter's known satellites:
Amalthea was the nymph who nursed the infant Jupiter with goat's milk.
Like most of Jupiter's moons, Amalthea rotates synchronously; its long axis is pointed toward Jupiter.
Amalthea is the reddest object in the solar system. The reddish color is apparently due to sulfur originating from Io.
Earlier, it was thought that its size and irregular shape should imply that Amalthea is a fairly strong, rigid body. But measurements of it's mass made during Galileo's last orbit indicate otherwise. It now appears that Amalthea's density is only about the same as water and since it is unlikely to be composed of ice it is most likely a loose "rubble pile" with a lot of empty spaces.
Like Io, Amalthea radiates more heat than it
receives from the Sun (probably due to the electrical currents
induced by Jupiter's magnetic field).
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Jupiter XIVThebe ("THEE bee") is the fourth of Jupiter's known satellites:
Thebe was a nymph, daughter of the river god Asopus.
Discovered by Synnott in 1979 (Voyager 1).The image above shows Thebe's leading side which has three or four large (compared to Thebe's size) craters. The image at left shows the trailing side.
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Bill Arnett; last updated: 2004 Jun 01