Astronomy Information

Astronomy is the scientific study of celestial objects and phenomena that originate outside the Earth's atmosphere . It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the formation and development of the universe.

Astronomy is one of the oldest sciences. Prehistoric cultures left behind astronomical artifacts such as Stonehenge, and early civilizations such as the Babylonians and ancient Greeks performed methodical observations of the night sky. However, the invention of the telescope was required before astronomy was able to develop into a modern science. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation, observational astronomy, the making of calendars, and even astrology, but professional astronomy is nowadays often considered to be synonymous with astrophysics.

During the 20th century, the field of professional astronomy split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of celestial objects, which is then analyzed using basic principles of physics. Theoretical astronomy is oriented towards the development of computer or analytical models to describe astronomical objects and phenomena. The two fields complement each other, with theoretical astronomy seeking to explain the observational results, and observations being used to confirm theoretical results.

Wikipedia, Astronomy, http://en.wikipedia.org/wiki/Astronomy (as of Mar 26, 2010)

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gu · ru [goo-roo] : one who is regarded as having great knowledge, wisdom and experience in a certain area, and who uses it to guide others. Log in or join now now to designate yourself or someone you know a Astronomy guru.

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