Shop Windows to the Universe

Hands On Mineral Identification helps you to identify over 14,500 minerals! By M. Darby Dyar, Ph.D. See our DVD collection.
This is an image of Ganymede.
NASA

Ganymede

Ganymede was first discovered by Galileo in 1610, making it one of the Galilean Satellites. Of the 60 moons it is the 7th closest to Jupiter. It is the largest moon in the solar system, much larger than the Earth's moon, with a diameter that is about the distance across the United States.

Ganymede is named after Jupiter's favorite cup bearer, from Roman mythology.

Last modified September 16, 2003 by Jennifer Bergman.

Shop Windows to the Universe Science Store!

Our online store includes issues of NESTA's quarterly journal, The Earth Scientist, full of classroom activities on different topics in Earth and space science, ranging from seismology, rocks and minerals, oceanography, and Earth system science to astronomy!

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Discover Jupiter

Jupiter is the biggest planet in our solar system! It's also very bright in the sky. We don't know who discovered it, but we do know the ancient Greeks named the planet after the god, Zeus. The United...more

Galilean Satellites

The Galilean satellites are the 4 big moons of Jupiter, Io, Europa, Ganymede, and Callisto. These moons are called Galilean because they were discovered by Galileo Galilei in 1610. In this picture, Io,...more

Magnetosphere of Ganymede

Did you know that some of the planets and moons can be magnetic? Earth is! The Galileo spacecraft found out that a moon of Jupiter, Ganymede, is magnetic too! ...more

Does Ganymede Have a Surface in Motion?

There has been no icy volcanism on Ganymede, nor continental drift, but it does seem that there have been movements of the surface. Examination of the surface of Ganymede reveals many kinds of faulting....more

The Atmosphere of Europa

The Galileo mission discovered an amazing thing! Europa has its own atmosphere, although it is very, very thin. When fast moving molecules traveling through space near Jupiter hit Europa's atmosphere,...more

Galileo

Galileo was a spacecraft that orbited Jupiter for eight years. It made many discoveries about Jupiter and its moons. Galileo was launched in 1989, and reached Jupiter in 1995. The spacecraft had two parts....more

Amalthea

Amalthea was discovered by E Barnard in 1872. Of the 17 moons it is the 3rd closest to Jupiter. Amalthea is about the size of a county or small state. Amalthea is named after the goat in Greek mythology...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA