2nd Grade Space Vocabulary
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Earth
3rd planet from the sun
comet
A ball of ice, rock, and frozen gases that orbits the sun
gravity
A force that pulls objects toward each other
constellation
A group of stars that form a pattern in the sky
Universe
All of space and everything in it
orbit
The path of an object as it revolves around another object in space
astronomy
The study of the moon, stars, and other objects in space
planet
a large, round object in space that moves around the sun or another star
telescope
an instrument that is used to view distant objects
solar system
sun, planets, and all the other objects that revolve around the sun
