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finals 6

light year

the distance light trvels in a year used to measure a star's distance from earth

big bang theory

a theory that explains how the universe was made

expanding universe

the motion of the superclusters of galaxies away from each other

oort cloud

cloud containg dirty ice well beyond the orbit of the kupler blet

Kuiper Belt

AN area containing rock-ice bodies beyond the orbit of Neptune


planets that ar outside the solar system

Milky Way Galaxy

the galaxy we live in

Kepler Mission

using transit to detect extrasolar planets.

How to detect plents

Doplar shift


a form of energy that is transferred by a difference in temperature


unit of force


the tendency of an object to resist any change in its motion

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