Thought that Earth was at the center of the universe - Aristotle, Said that Earth orbited the sun - Copernicus, The Earth is at the center - Geocentric, The sun is at the center - Heliocentric, Made an improved version of the telescope in 1609 - Galileo, The movement of the Earth around the sun - Revolution, The movement of the Earth on itself - Rotation, Imaginary line that passes through Earth from the North Pole to the South Pole - Axis, Half of Earth facing the sun - Daytime, Half of Earth facing away the sun - Nighttime, When the North Pole is tilted away from the sun, the season in the northern hemisphere is - Winter, When the North Pole is tilted toward the sun, the season in northern hemisphere is - Summer, When the Sun and the Moon are line up with the Earth in the middle - Lunar Eclipse, When the moon passes between the Sun and the Earth - Solar Eclipse,

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