This glossary provides an alphabetical listing of terms related to physical features, types of activity, and energy radiated by the sun. Links embedded in the text help connect related terms. Full description.

This document provides the user with an introduction to the structure and physical properties of the Sun. A brief discussion of hydrogen fusion is included, along with a table that lists some numerical information about our star. Links to a glossary are embedded in the text, and links to related sites are also provided. Full description.

This press release explains how scientists have enhanced their ability to predict space weather by detecting active regions on the sun's surface on the far side of the Sun, before they rotate to its Earthward side. Using the SWAN instrument aboard the SOHO satellite, they are able to detect hydrogen atoms in space, which are being illuminated by radiation emitted from active regions (sunspots), even ... Full description.

This timeline chronicles events related to magnetospheric exploration, and places them in the broader context of the history of science and technology. It begins in 1000 A.D. with the discovery of the magnetic compass. Full description.

This site displays a brief animation of a supernova explosion and presents an explanation of the types and causes of supernovae. Links to a glossary are embedded in the text. Full description.

Visitors can learn about the IMAGE (Imager for Magnetopause-to-Aurora Global Exploration) spacecraft, instruments, and mission. Materials include news articles, photos, animations, documentation, and datasets. For educators, there is the IMAGE Public Outreach, Education, Teaching and Reaching Youth (POETRY) site, which provides teachers, students and the interested public with the latest information ... Full description.

The home page of the Astrophysics Science Division at Goddard Space Flight Center provides information on the division's research projects, missions, goals, and activities. Topics include the evolution of galaxies, stars, and planets; the diversity of worlds outside our solar system; the possibillity of life on those worlds; and astrophysics questions such as what powered the Big Bang, what is dark ... Full description.

This site describes bouyancy (the difference between the upward and downward forces acting on the bottom and the top of an object) and the Archimedes Principle, which states that the buoyant force on a submerged object is equal to the weight of the fluid that is displaced by it. It consists of text descriptions of these principles, using the examples of metal cubes suspended in water and hot air baloons ... Full description.

This educational brief provides an overview of the types of solar activity and their potential effects on Earth, along with brief descriptions of some spacecraft and instruments that are used to study solar acvtivity. Links to a glossary and to additional information are included. Full description.

Visitors can learn about the causes of "space weather" and phenomena like auroras, interruptions in electric power service, and interference with communications. Definitions of solar activities such as coronal mass ejections, solar energetic particles, and coronal holes are provided, along with explanations of how they affect Earth's magnetic field and atmosphere. Remotely-sensed imagery of solar ... Full description.