These views of asteroids were imaged at close range by the Galileo and Near Earth Asteroid Rendezvous (NEAR) spacecraft. They are presented at the same scale, and images of Mars' moons, Phobos and Deimos, and Ida's moon Dactyl are also shown. The accompanying text provides a description of the images, some historical facts and statistical data, along with significant dates in asteroid exploration. Full description.

This lithograph shows Jupiter's four largest moons in their correct scales, in order of increasing distance away from Jupiter (from bottom: Io, Europa, Ganymede, and Callisto). All the images were taken by the Galileo spacecraft, except for the globe of Callisto, which was taken by the Voyager spacecraft. The accompanying text describes the images, provides some historical facts and statistical data, ... Full description.

This site discusses the cosmic microwave background, radiation left over from the Big Bang. Particular emphasis is upon tiny fluctuations in the temperature of the radiation, which are believed to reflect fluctuations in the density of matter in the early universe. Full description.

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 article discusses how graphic representations of data helped make recognizing patterns easier. The use of maps of surface temperature in the Pacific Ocean to detect El Nino events is cited as an example. Full description.

This database contains imagery from geosationary satellites. Visitors can access daily images or archived imagery form GOES-9, METEOSAT, and other satellites. The imagery features hemispheric and whole-disk views of Earth, water vapor maps, and images of storms and other special events. Links to satellite homepages and to other related topics are included. Full description.

This collection of GOES satellite imagery features still pictures and movies of weather phenomena and landforms. The collection is divided into east and west sectors. A selection of "scrapbooks" archives images from previous GOES missions. Links to news and information are also included. Full description.

This collection of visualizations was made from Landsat imagery. Many of these visualizations are designed to show changes in our environment through time. Subjects include glacial retreat, urban growth, landforms and coastlines, floods, fires, deforestation, volcanism, and others. Full description.

The information provided here includes general and technical information, data products, and links for all Landsat satellites and instruments up to the latest, Landsat 7, launched in 1999. Topics include a project description with objectives, orbit information, investigations of technical problems, an image gallery, information on searching and ordering data products, and links to sites that feature ... Full description.

This collection of Hubble Space Telescope images, animations, and movies includes a searchable gallery, news articles, accounts of discoveries made using Hubble imagery, and a "tour of the Cosmos". Links to related topics are included. Full description.