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7 terms

Earth, Moon, Stars lesson 1-2 Vocab

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Geocentric Perspective
the perspective of the universe focusing on the Earth as the center of the universe
Heliocentric Perspective
the perspective of the solar system focusing on the Sun as the center.
Galaxy
a large system of dust, gas, and stars that has a particular shape
Astronomical Unit (AU)
the unit of measure equal to the Earth's distance from the Sun. The Earth is 1 AU (150 million km) from the Sun.
Astronomy
the study of the stars, planets, and other objects in space.
Rotation
the spinning of an object around a central axis.
Revolution
the orbiting of one object around another