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Bookmark or Share- Astronomy - WikipediaAstronomy (from Greek : ἀστρονομία) is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets.
- Astronomy | Definition of Astronomy at Dictionary.comAstronomy definition, the science that deals with the material universe beyond the earth's atmosphere. See more.
- Astronomy Magazine - Interactive Star Charts, Planets ...Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...
- Astronomy Picture of the Day Archiveastronomy picture of the day dated archive listing. Note: Some versions of Chrome are having trouble pre-fetching the links on this page and freezing.
- Sky & Telescope | Astronomy News, Tools & ResourcesSky & Tel covers the latest night-sky events, astronomy news, astrophotography and observing tips. Also browse our video & podcast guides to tonight's sky.
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