Astronomy Flashcards 2018

Do you really want to pass Astronomy exam and/or expand your knowledge & expertise effortlessly?

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- Break learning materials into small sets of practice questions & terms

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- Ready for the Exam by Exam Simulator

Premium Features:

+) Lifetime access to all Practice Questions & Terms prepared by EXPERTS for the most current exam.

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Free version:

+) Hundreds of practice questions & terms

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Astronomy 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; while the phenomena include supernovae explosions, gamma ray bursts, and cosmic microwave background radiation. More generally, all astronomical phenomena that originate outside Earth's atmosphere are within the purview of astronomy. A related but distinct subject, physical cosmology, is concerned with the study of the Universe as a whole.

Astronomy is the oldest science, with the first observations of the heavens conducted by our early human ancestors. Historical records of astronomical measurements date back as far as Mesopotamia nearly 5000 years ago, with later observations made by the ancient Chinese, Babylonians, and Greeks. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation, observational astronomy and the making of calendars, but professional astronomy is now often considered to be synonymous with astrophysics.

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