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Astronomy - Official Site
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
Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Astronomy - Wikipedia
Astronomy (from Greek: ἀστρονομία) is a natural science that studies celestial objects and phenomena.It applies mathematics, physics, and chemistry, in an effort to explain the origin of those objects and phenomena and their evolution.Objects of interest include planets, moons, stars, galaxies, and comets; the phenomena include supernova explosions, gamma ray bursts, and cosmic ...
Astronomy News - Space Science - Articles and Images
Read the latest news and articles about astronomy and space science. Plus, amazing photos of the night sky and dramatic imagery of cosmic phenomena. Astronomy News - Space Science - Articles and ...
What is Astronomy? Definition & History - Space.com
Astronomy is the study of the sun, moon, stars, planets and other objects and phenomena in space. It has a long, rich history. Astronomy is the study of the sun, moon, stars, planets and other ...
Astronomy | Define Astronomy at Dictionary.com
Astronomy deals with the position, size, motion, composition, energy, and evolution of celestial objects. Astronomers analyze not only visible light but also radio waves, x-rays, and other ranges of radiation that come from sources outside the Earth's atmosphere.
Astronomy for Kids - Official Site
Powerful and fun resource for kids, exploring astronomy and other space related topics. Play games, learn through interactive applications, and much more.
astronomy | Definition & Facts | Britannica.com
Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Until the invention of the telescope and the discovery of the laws of motion and gravity in the 17th century, astronomy was primarily concerned with noting and predicting the positions of the Sun, ...
Astronomy Picture of the Day Archive
astronomy picture of the day dated archive listing