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See Featured 4 Resources
Infrared Astronomy Tutorial examines infrared light, how it was discovered, infrared astronomy, atmospheric windows, and more. An infrared astronomy timeline is included, along with links to news and...  (National Aeronautics and Space Administration)
Space Science Education Resource Directory helps find NASA space science resources for learning. Hundreds of resources can be sorted by science type (earth, physical, or space), or by grade range. Topics include algebra...  (National Aeronautics and Space Administration)
Physical Sciences presents more than 200 activities, visualizations, and lessons on electricity and magnetism, energy, heat and thermodynamics, interactions of matter, light and optics, measurement...  (Exploratorium, supported by National Science Foundation)
Science of Spectroscopy features a wiki-based effort to tell the story of spectroscopy -- the use of light to study matter. Find answers to questions about the basic theory of light, energy, and the...  (National Aeronautics and Space Administration)
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