|A ROCK CALLED AMALTEA| Discovered only at the end of the Nineteenth century, Amaltea is a small moon that is halfway between the large Galilean satellites and the "pebbles" of the secondary moons. With an elongated shape, its major axis is about 270 kilometers long which "points" towards Jupiter while the minor axis has a length of 155 kilometers and is perpendicular to the plane of the orbit. There is great interest in this body, which is hotter than it should be due to Jupiter's magnetic field, which produces electric current, because it is the first one with these dimensions to be explored by a probe from a very short distance. Discovered only at the end of the Nineteenth century, Amaltea is a small moon that is halfway between the large Galilean satellites and the "pebbles" of the secondary moons. With an elongated shape, its major axis is about 270 kilometers long which "points" towards Jupiter while the minor axis has a length of 155 kilometers and is perpendicular to the plane of the orbit. There is great interest in this body, which is hotter than it should be due to Jupiter's magnetic field, which produces electric current, because it is the first one with these dimensions to be explored by a probe from a very short distance.