S.E.M

Question Answer
Rotation the action of rotating around an axis or center.
Revolution to go around or movement
Orbit move around the plants
Geocentric Theory a system which puts the Earth in the center of the universe
Heliocentric theory the earth revolves around the sun
Astromony space, and the physical universe as a whole.
Solar system the collection of eight planets and their moons in orbit around the sun
Telescope an optical instrument designed to make distant objects appear nearer
Commet a celestial object consisting of a nucleus of ice and dust
Gravity the force that attracts a body toward the center of the earth
Astronomer an expert in or student of astronomy
NASA The National Aeronautics and Space Administration
Axis an imaginary line about which a body rotates
Tilt move or cause to move into a sloping position
Meters he fundamental unit of length in the metric system
Constalation a group of stars forming a recognizable pattern that is traditionally
Vernal Equinox spring, sun was right at the equator March 21st
Autumnal Equinox fall, Sun is right at the equator september 22nd and 23rd
Summer Solstic summer, the sun is north of the equator at the Tropic of Cancer June 21st
Winter Solstic winter, December 21st the sun is further south at the tropic of capricorn
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