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Visible Earth
Fascinating photographs of our planet.
Grade Level: 3-5, 6-8, 9-12, Advanced, Professional

http://visibleearth.nasa.gov/

CONTENT:
Visible Earth provides a searchable directory of images, visualizations, and animations of Earth. The images are grouped into many broad categories and subcategories.
SITE DESIGN:
The database can be easily searched by keyword. It can also be browsed by satellite, sensor, collection, country, U.S. state, or topic. The topics -- which include subjects such as agriculture, biosphere, and solar physics -- are further organized into sub-topics. Some of the file formats require special plug-ins, such as QuickTime, which can be downloaded at the site.
 

REVIEW:
Educators or anyone interested in earth science will find this site interesting. The database has thousands of records and provides access to NASA's Earth science-related images, animations, and data visualizations. Each record contains images, credits, and descriptions. Users can choose the size of image that is appropriate for their connection speed. All of the images are considered in the public domain and are freely available to all.

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