in 1979mar. Credit: NASA . Collage of Jupiter's inner moons Thebe (top two images), Amalthea (middle two images), and Metis (bottom image). Galileo probe, 1997nov. Jupiter has 4 small moons within the orbital radius of the innermost Galilean moon Io : Metis , Adrastea , Amalthea , and Thebe . Adrastea