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( Astronomy)
Astronomy (from the Greek words astro(ast???) = star and nomos(??µ??) = law) is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth's atmosphere (such as the cosmic background radiation). 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. Astronomers of early civilizations performed methodical observations of the night sky, and astronomical artifacts have been found from much earlier periods. 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. Since the 20th century, the field of professional astronomy split into observational and theoretical branches. Observational astronomy is focused on acquiring and analyzing data, mainly 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. Old or even ancient astronomy is not to be confused with astrology, the belief system which claims that human affairs are correlated with the positions of celestial objects. Although the two fields share a common origin and a part of their methods (namely, the use of ephemerides), they are distinct.[1] The word astronomy literally means "law of the stars" (or "culture of the stars" depending on the translation) and is derived from the Greek ast????µ?a, astronomia, from the words ?st??? (astron, "star") and ??µ?? (nomos, "laws or cultures").
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Astronomy Articles
God, Hinduism, Buddhism, Judaism, Christianity: Secret Wisdom Of World Spiritual Teachers Exposed by I-key Benney
Only the TRUTH, and nothing but the TRUTH shall set you free
For thousands of years, all the world’s greatest spiritual teachers: Buddha, Mahavira, Lao Tzu, Bodhidarma, Socrates, Plato, Jesus Christ, Muhammad, Osho Rajneesh (and others) have ...
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