This lithograph provides a full-disk view of Earth photographed by Apollo 17 astronauts, Dec. 7, 1972. The accompanying text describes the view seen in the photograph and the circumstances in which it was taken. Suggestions for activities in which the photograph can be used are also provided. Full description.

This news article discusses data on Jupiter's moon Europa returned by NASA's Galileo and Voyager spacecraft and the possibility that an ocean of liquid water might exist on Europa and, with it, the possiblilty for extraterrestrial life. Full description.

This is part of the U.S. Geologic Survey's Water Science for Schools website. It consists of a set of links to other parts of the site dealing with groundwater-related topics such as groundwater flow and distribution, trends in groundwater use, importance of groundwater, and groundwater quality. Graphic illustrations and photographs are provided. Full description.

Geomorphology from Space is an out-of-print 1986 NASA publication designed for use by the remote sensing, science, and educational communities to study landforms and landscapes. Users can access a gallery of images consisting of 237 plates arranged by particular types of landforms such as tectonic, volcanic, planetary, and others. Photographs, locator maps, and sometimes a geologic map accompany the ... Full description.

This page describes El Nino and the Southern Oscillation and how they may contribute to severe weather and the destruction of sensitive ecosystems such as coral reefs. It features text, pictures, scientific illustrations, and links to satellite information and weather-related science activities. Full description.

This is a photograph of the 18 May 1980 explosion of Mount St. Helens. Links to other volcano images and related topics are included. Full description.

These galleries provide links to images and pictures related to space exploration, astronomy, Earth, and the search for extraterrestrial life. Full description.

These images of the Kanaga Volcano show the symmetrical cone which is characteristic of stratovolcanoes. It is also possible to see how the current volcanic edifice has grown inside an older caldera, the remains of ancient Mount Kanaton. References and links to related sites are included. Full description.

Users can access photographs of various forms of erosion, erosion damage, and "before and after" photos showing how the problem was brought under control. Each photograph is accompanied by a description of the activity which is taking place. Full description.

This GIF image is part of the U.S. Geological Survey's Cascades Volcano Observatory website, which includes pictures (archived and real-time), written reports, seismic data, and other materials on volcanology, including a glossary and links to other relevant sites. These images show Mount St. Helens while it was erupting on May 18th, 1980. Full description.