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Space

Vocabulary

TermDefinition
Rotate To spin around an axis
Revolve To travel in a closed path around the sun
Orbit An object’s path in space around another object
Axis An imaginary line that runs through the center of Earth from the North Pole to the South Pole
Galaxy A huge system of gases, dust, and stars
Universe Everything that exists in space
Constellation A group of stars that form an imaginary picture in the sky
Solar system A group of objects in space that orbit a star in the center, plus the star itself
Sun A star that is at the center of our solar system
Star A huge ball of superheated gases
Comet A ball of rock, ice and frozen gases
Moon A small planet-like body that revolves around Earth rather than the sun
Phases As the moon revolves around Earth, different amounts of its lit surface can be seen
Planet A large object that revolves around a star in a clear orbit
Dwarf planet Also resolves around a star, but its path is not clear of other objects
Created by: user-2047165
 

 



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