This site allows users to study maps and read a description about the Wilkinson Microwave Anisotropy Probe (WMAP), which has made a new determination of the age of the universe and collected data on the oldest light in the universe, microwave "light" captured from 379,000 years after the Big Bang. Full description.

This science brief introduces OMNIWeb, an internet-based data retrieval and analysis interface for near-Earth solar and geomagnetic data. A summary of solar and heliospheric physics, including basic terms, is also provided. Full description.

This is the table of contents listing for the NASA booklet "Shedding a New Light on the Universe". Each item in the table is a link to a specific topic. Topics include such items as the electromagnetic spectrum, frequency, wavelength, and energy activity, the multiwavelength Milky Way, the Crab Nebula in different energies, spectroscopy, satellites and their parts, and the Rossi X-ray Timing Explorer ... Full description.

This document describes the features and properties of Earth's magnetosphere. Topics include the magnetosphere's shape, descriptions of its features, the Van Allen Belts, particle motions, and magnetic storms. Links to illustrations and tables are embedded on the text. Full description.

This educational brief provides an overview of the concepts of radioactivity, basic particle physics, and the use of radioactive decay as a mechanism to date our galaxy. Full description.

Growth in "mega-cities" is altering the landscape and the atmosphere in such a way as to curtail normal photosynthesis. By using data from The Defense Meteorological Satellite Program's Operational Linescan System, researchers have been able to look at urban sprawl by monitoring the emission of light from cities at night. By overlaying these "light maps" onto other data such as soil and vegetation ... Full description.

Students can put their weights into this calculation tool and see how much more or less they would weigh on the other planets, moons, our sun, and other types of stars. The tool is accompanied by discussions of mass, weight, gravity , and distance. Clicking on the images of the planets links the user to additional information for each one. 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.

This educational brief provides a description of the use of spectroscopy to identify elements in the stars, including a scientific explanation of bright line and dark line spectra, from an historical perspective. A list of links to additional information and images of atomic spectra is also provided. Full description.

This site presents graphic plots of solar wind and magnetic field data from the Advanced Composition Explorer (ACE) spacecraft. Full description.