 The Voyager missions vastly improved our understanding of the Galilean moons , and also discovered Jupiter 's rings . They also took the first close @-@ up images of the planet 's atmosphere , revealing the Great Red Spot as a complex storm moving in a counter @-@ clockwise direction . Other smaller storms and eddies were found throughout the banded clouds ( see animation on the right ) . Two new , small satellites , Adrastea and Metis , were discovered orbiting just outside the ring , making them the first of Jupiter 's moons to be identified by a spacecraft . A third new satellite , Thebe , was discovered between the orbits of Amalthea and Io . 
 The Voyager missions vastly improved our understanding of the Galilean moons , and also discovered Jupiter <a href='null_genetive' title='1'><mark>'s</mark></a>rings . They also took the first close @-@ up images of the planet <a href='null_genetive' title='2'><mark>'s</mark></a>atmosphere , revealing the Great Red Spot as a complex storm moving in a counter @-@ clockwise direction . Other smaller storms and eddies <a href='uninflect' title='3'><mark>were</mark></a> found throughout the banded clouds ( see animation on the right ) . Two new , small satellites , Adrastea and Metis , <a href='uninflect' title='4'><mark>were</mark></a> discovered orbiting just outside the ring , making them the first of Jupiter <a href='null_genetive' title='5'><mark>'s</mark></a>moons to be identified by a spacecraft . A third new satellite , Thebe , was discovered between the orbits of Amalthea and Io . 
Da Voyager missions vastly improved our understanding of the Galilean moons , and also discovered Jupiter  rings . They also took the first close @-@ up images of the planet  atmosphere , revealing tdaGreat Red Spot as a complex storm movin in a counter @-@ clockwise direction . Other smaller storms and eddies was found throughout the banded clouds ( see animation on thdaight ) . Two new , small satellites , Adrastea and Metis , was discovered orbiting jus outside the ring , making em thedarst of Jupiter  moons to be identified by a spacecraft . A third new satellite , Thebe , was discovered between the orbits of Amalthea and Io .