Jupiter and the Galilean Moons


The Jovian system by Real World Globes is a vibrant addition to anyone's collection of globes!

Jupiter is the fifth planet from our Sun and is, by far, the largest planet in the solar system – more than twice as massive as all the other planets combined. Jupiter's stripes and swirls are actually cold, windy clouds of ammonia and water, floating in an atmosphere of hydrogen and helium. Jupiter’s iconic Great Red Spot is a giant storm bigger than Earth that has raged for hundreds of years.

Jupiter is surrounded by 79 known moons. Scientists are most interested in the Galilean satellites – the four largest moons discovered by Galileo Galilei in 1610: Io, Europa, Ganymede and Callisto. Jupiter also has several rings, but unlike the famous rings of Saturn, Jupiter’s rings are very faint and made of dust, not ice.

Jupiter is named for the king of the ancient Roman gods.​

Read more about Jupiter at NASA's website.



Lesson Activities & Curriculum Standards

  • Activities for 18" Globe Kit -- see lessons #5 & #7
  • Jupiter Measuring Tapes for 18" Globe Kit -- print out at 22" for correct scale

  • Galilean Satellites Lesson Activities & Answer Keys

  • Galilean Moons Overview - Worksheets by Michael Carroll
  • Worksheets
  • Callisto Worksheet
  • Europa Worksheet
  • Ganymede Worksheet
  • Io Worksheet
  • Answer keys
  • Callisto Answer Key
  • Europa Answer Key
  • Ganymede Answer Key
  • Io Answer Key

  • Jupiter Activites & Information

    Cassini-Huygens Mission - More Information on this mission
    Cassini Imaging Team

    Callisto Activites & Information

    Solar System Exploration: Jupiter Moon - Callisto - NASA
    JUICE: JUpiter ICy moons Explorer - European Space Agency
    The Outer Planets: The Galilean Moons of Jupiter - LASP University of Colorado
    Galilean Moons - Universe Today | November 15, 2009

    Europa Activites & Information

    New Evidence for Liquid Water on Europa - NASA
    Water Vapor Plumes Erupt from Europa - NASA
    It's Time to Go to Europa - Scientific American | April 15, 2015
    JUICE: JUpiter ICy moons Explorer - European Space Agency
    The Outer Planets: The Galilean Moons of Jupiter - LASP University of Colorado
    Galilean Moons - Universe Today | November 15, 2009

    Ganymede Activites & Information

    Solar System Exploration: Jupiter Moon - Ganymede - NASA
    JUICE: JUpiter ICy moons Explorer - European Space Agency
    The Outer Planets: The Galilean Moons of Jupiter - LASP University of Colorado
    Galilean Moons - Universe Today | November 15, 2009

    IO Activites & Information

    Planets, Io: Volcanic Moon, NASA
    JUICE: JUpiter ICy moons Explorer, European Space Agency
    The Outer Planets: The Galilean Moons of Jupiter, LASP University of Colorado
    Galilean Moons - Universe Today



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