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AustinB Astronomy

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QuestionAnswer
astronomy The study of stars, planets, and galaxys.
axis An imaginary straight line on which an object rotates.
rotation When an object spins it is said to be rotating.
revolution When something is moving in a circle around another object such as the way the Moon Circles the Earth it is said to revolve around that object.
orbit The path one object takes around another.
tilt When a planet turns on it's side all rotates to that side.
solstice 22 June, and 22 December. Time of the year when the day is either shortest, or longest depending on where you are.
equinox March 21st, and September 22nd. Twice a year, when the day and night are the same amount of time all around the world.
phase The apparent change in the shape of the Moon, Mercury, and Venus due to how much of the sunlit side is facing the Earth.
eclipse When our view of one object in the sky is blocked by either another object, or the Earths shadow.
gravity The force that keeps things close to the ground found on planet Earth.
tide The speed or amount of force in which the waves in the ocean move.
satellite A small object orbiting a larger one. There are many electronic objects that orbit the Earth.
telescope A device that allows you to see at a very extended distance.
geocentric Simply means the Earth in the Center. People used to believe the Universe was geocentric, or that the Earth was in the center of the Universe.
heliocentric Having the sun as the center.
inner planet A planet that is closer to the sun.
outer planet A planet that is farther away from the sun.
comet A small, frozen mass of dust and gas revolving around the sun.
asteroid A rock, or Minor Planet orbiting the Sun.
meteroid Any small object in Outer Space, such as dust, or a rock.
constellation A grouping of stars which have been given names by ancient astronomers because of the way they look.
galaxy A group of stars, gas and dust held together by gravity.
universe Everything in existense.
Milky Way The Galaxy the planets we know, such as Earth, Mercury, Mars, Pluto, etc. are all in.
Created by: abuschang
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