This collection of classroom activities covers ocean study topics such as climate and the degree to which the ocean controls climate, physical properties of the ocean (density, salinity, currents, and others), and the scale of ocean life and life support structures. Each activity features an overview, concepts, a materials list, and instructions. Highlighted terms are linked to a glossary. Full description.

Readers can learn about the latest advancements in X-ray astronomy, and how the newest generation of instruments are making observations of the behavior of light, matter, and space-time in the vicinity of black holes. These observations are then compared to results predicted by Einstein's General Theory of Relativity. Links to a glossary are imbedded in the text of the article. Full description.

This webpage is part of NASA's Classroom of the Future program. It provides background information about how ocean temperatures, currents, and atmospheric conditions combine to produce an El Nino event. The site features text, scientific illustrations, a glossary, and links to other Classroom of the Future pages. Full description.

This article explains the life cycles of stars. Topics include the effect of a star's mass on its life cycle, and what happens when stars reach the end of their life spans. Links to a glossary are embedded in the text. Full description.

This training module was designed to help the user identify and grasp basic concepts associated with space travel and deep space missions. Separate sections deal with topics such as the physical environment of space (solar system, gravity, orbital mechanics), flight projects (mission concepts, system requirements, design, onboard systems and instruments), and flight operations (launch, cruise, encounter). ... Full description.

This is the home page for a set of articles on the Earth's magnetosphere and other phenomena related to charged particles and magnetic fields. This page features an index consisting of summary files on such topics as magnetism, electrons, ions, plasmas, radiation belts, the sun and solar wind, the magnetosphere, and auroras. Following the summaries are links to detailed articles on each topic. Each ... Full description.

Teachers can access activities and lesson plans, introductory material, a glossary, and frequently asked questions about the sun. Materials include images, videos, CDs, and posters. An extensive selection of links to other sun-related materials is also provided. Full description.

The Galileo educator site offers educators and students interesting facts about NASA's Galileo mission to Jupiter and Europa, and many classroom activities. There are activities to interpret new images of new worlds, planets and satellites, navigating the solar system, planetary surfaces, a closer look of Europa, design a spacecraft to test for life on Europa, building a scale model of the Galileo ... Full description.

Visitors to this site can choose from a set of links to materials on basic astrophysics, cosmic radiation, features and behavior of the sun, and space weather. An "Ask Us" feature, a glossary, and a selection of links to related sites are included. Full description.