Astronauts take photographs of the Earth for many reasons: science, weather, politics, geography, or simply for their own interest. Satellites and space stations also take automatic photographs as they orbit.
A NASA sponsored program that provides photographs taken from the Space Shuttle and International Space Station. Explains how select middle schools request images based upon their classroom investigations. www.earthkam.ucsd.edu
A photograph made from several views of the whole world, showing city lights and areas of greater population. From NASA's Astronomy Picture of the Day series. antwrp.gsfc.nasa.gov/apod/ap001127.html
Images taken by orbitting satellites show geographical features in unexpected ways. Some can be downloaded as screensavers. earthasart.gsfc.nasa.gov/index.htm
Explains the SeaWiFS project by NASA, which uses satellites to learn about the condition of the oceans. Includes digital and colour images, with examples of the way the information is used. oceancolor.gsfc.nasa.gov/SeaWiFS
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