AS101 Chapter Notes - Chapter 1&2: Spiral Galaxy, Cosmic Calendar, Particle Accelerator

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19 Jun 2014
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The scale of the cosmos: space and time. Field of view: the area visible in an image. Usually given as the diameter of the region. Scientific notation: the system of recording very large or very small numbers by using powers of 10. 1. 1 from solar system to galaxy to universe. Cern - home of the large hadron collider. The largest particle accelerator in operation today, which was designed to simulate the beginning of the universe. Astronomical unit (au): average distance from earth to the sun; 1. 5 x 10^8 kilometres. Solar system: the sun and its planets, asteroids, comets, and so on. 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.

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