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General facts and statistical information about planets, moons, constellations, stars, galaxies, and Messier objects.
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Hands-On Universe

Enables students to investigate the Universe while applying tools and concepts from science, math, and technology.
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Munich Astronomical Archive

Data on astronomical objects.
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Nick Strobels Astronomy Notes

Complete astonomy textbook for first-year college courses.
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Presents weekly geological, astronomical, meteorological, biological, and environmental news from around the globe, plus Internet activities and links to science resources.
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Sea and Sky

Explore the splendors of the sea and the wonders of the universe through information, images, sounds, links, and interactive games.
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