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astronomy

TermDefinition
orbit The path an object takes around the sun
revolution the amount of time it takes something to complete one orbit
rotation the amount of time it takes to complete one full spin on its axis
axis an imaginary line running through a planet connecting the north and south poles
constellation a group of stars in the night sky that form a pattern
lunar eclipse when the earth is blocking the sunlight from hitting the surface of the moon
solar eclipse when the moon is blocking most of the light from hitting earths surface
moon phases the versions of the moon when only part of it is visible to earth
tides the movement of water on earth surface based on the gravitational pull of the moon and the sun
neap tide when the highest lows and the lowest high tides occur
spring tides when the lowest lows and highest high tides occur
23.5 degrees the tilt of the earth's axis
big bang theory the theory of how the universe formed
galaxy an area where there are 100's of billions of stars clustered together
luminosity the amount of light given off by a star
solar system the sun and all objects that orbit the sun under its gravitational influence
nebula a ball of gas and dust that a star forms out of
main sequence star the stage of a stars life that has average mass and average luminosity, it is a young star
gravity the force pulling everything together in the universe
black hole one possibility of the end of the life of a massive star that sucks everything in, not even letting light escape
supernova the explosion associated with the end of life for a massive star
giant the star stage after the main sequence. the actual size and color depend on the mass of the star.
white dwarf the stage after the giant star for the low mass stars
black dwarf the stage after a white dwarf star for low mass stars. the end of the stars life.
seasons the changing of temperatures on earth based on the revolution of the earth
insolation incoming solar radiation.
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