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  2. Astronomy News

  3. Astronomy - Official Site is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...

    • Sky This Week

      The Sky this Week | is for...

    • News

      News | is for anyone who wants...

    • Photos

      Photos | is for anyone who...

    • Observing

      Observing | is for anyone who...

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  4. Astronomy - Wikipedia

    Astronomy (from Greek: ἀστρονομία) is a natural science that studies celestial objects and phenomena. It applies mathematics, physics, and chemistry, in an ...

  5. What is Astronomy? Definition & History

    Astronomy is the study of the sun, moon, stars, planets and other objects and phenomena in space. It has a long, rich history.

  6. A different astronomy and space science related image is featured each day, along with a brief explanation.

  7. Define astronomy. astronomy synonyms, astronomy pronunciation, astronomy translation, English dictionary definition of astronomy. n. pl. as·tron·o·mies 1. The ...

  8. Astronomy | Define Astronomy at

    Astronomy definition, the science that deals with the material universe beyond the earth's atmosphere. See more.

  9. provides the latest news on astronomy, space, earth science and space exploration.

  10. Astronomy | NASA

    NASA uses telescopes to study astronomy.

  11. Sky & Telescope - Official Site

    Sky & Tel covers the latest night-sky events, astronomy news, astrophotography and observing tips. Also browse our video & podcast guides to tonight's sky.

  12. Astronomy | Definition of Astronomy by Merriam-Webster

    Define astronomy: the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties