Shop Windows to the Universe

Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.
This is an image of Io.
Click on image for full size
The Jet Propulsion Laboratory

Io's Atmosphere

There are no clouds and lightning. Io has a very important atmosphere, even though it is very thin and it does not stay on Io for very long.

Io's atmosphere comes from its volcanoes, then fades away. Because the atmosphere comes from it's volcanos, the air of Io is made primarily of sulphur.

Once the particles from the atmosphere get into the magnetosphere, they create a donut-shaped cloud of material around Io.

The Galileo spacecraft, in exploring the moons of Jupiter will try to learn more about the atmosphere of Io.


Shop Windows to the Universe Science Store!

Our online store includes books on science education, ranging from evolution, classroom research, and the need for science and math literacy!

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

Torus

A satellite which has an atmosphere, such as Jupiter's moon Io will leave a cloud of particles behind as it orbits the planet. This cloud of particles is called a torus. The torus is shown in yellow in...more

The Io Torus

A satellite which has an atmosphere, such as Jupiter's moon Io, and which also is inside a magnetosphere (unlike the Earth's moon), will leave a cloud of particles behind as it orbits the planet. This...more

Looking for Life's Garbage

Most forms of life leave behind signs that they are there. Plants help make oxygen and some creatures help make nitrogen. People leave behind smog, television signals, and garbage. Scientists find life...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

Callisto

Callisto was first discovered by Galileo in 1610. It is the 2nd largest moon in the solar system, and is larger than the Earth's moon. It is about as big as the distance across the United States. Callisto...more

Evolution of Callisto

Measurements by the Galileo spacecraft have been shown that Callisto is the same inside from the center to the surface. This means that Callisto does not have a core at the center. This means that, unlike...more

Very Large Impact Crater

Many different types of surface are shown in this picture. In the front is a huge crater, which goes for a long way over the surface. This crater could be compared to that of Mimas. They both show that...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