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Astronomical terms

QuestionAnswer
The study of moons, stars, and other objects in space Astronomy
An imaginary straight line on which an object rotates Axis
The spinning motion of a planet about its axis Rotation
The moving of an object around another object Revolution
The path one object takes around another Orbit
When an object is at an angle Tilt
22 June, and 22 December. Time of the year when the day is either shortest, or longest depending on where you are Solstice
March 21st, and September 22nd. Twice a year, when the day and night are the same amount of time all around the world. Equinox
The apparent change in the shape of the Moon, Mercury, and Venus due to how much of the sunlit side is facing the Earth Phases
When our view of one object in the sky is blocked by either another object, or the Earths shadow. Eclipse
The attractive force between two objects Gravity
The rise and fall of the level of water in the ocean. Tide
A small object orbiting a larger one. There are many electronic objects that orbit the Earth. Satellite
An object used to study distant objects by making them appear bigger Telescope
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. Geocentric
a description of the solar system revolving around the sun Heliocentric
A planet that is inside the asteroid belt Inner Planet
A planet that is outside the asteroid belt Outer Planet
A small, frozen mass of dust and gas revolving around the sun. Comet
A rock, or Minor Planet orbiting the Sun. Asteroid
Any small object in Outer Space, such as dust, or a rock. Meteoroid
A grouping of stars which have been given names by ancient astronomers because of the way they look. Constellation
A group of stars, gas and dust held together by gravity. Galaxy
All space and everything in it Universe
Our Galaxy. (the word "Galaxy" actually means milky way in Greek). Milky Way
Created by: tman684
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