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Astronomy (53)
AS101 (52)
Chapter 1

Astronomy Chapter 1.docx

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Department
Astronomy
Course
AS101
Professor
Arthur Read
Semester
Fall

Description
Field of View—The area visable in an image, usually given as the diaeter of the region Scientific notation—the system of recording very large or small numbers by using powers of 10 1.1From Solar System to Galaxy to Universe: • CERN is home of Large Hadron Collier, largest particle accelerator in operation • Astronomy is the study of large numbers Astronomical Unit—average distance from the earth to the sun. 1.5x10 to the 8 kilometers Solar system—the sun and its planets, asteroids, comets, etc. Planet—a non-luminous body in orbit around a star, large enough to be spherical and to have cleared its orbital zone of other objects Star—a globe of gas held together by its own gravity and supported by the internal pressure of its hot gases, which generate energy by nuclear fusion • Proxima Centauri is the nearest star to the sun, 4.2 ly away from e
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