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Astronomy

Stack #128276

WordsDefinitions
celestial objects all of the objects in the universe
stars celestial objects made up of gases and that generate light
solar system the system made up of the eight planets and many smaller objects that orbit the sun
sun the closest star to earth
gravity the attraction of one mass to another
planet a celestial body that revolves around a star and doesn't give off it's own light
AU Astronomical Unit or a way to measure large distances
asteriods irregular pieces of rock that move through space
mass the amount of matter in something
comets composed of dust and ice and orbit the sun
meteor a small particle of matter the is seen when it falls through earth's atmosphere
satellites natural or man-made objects that revolve around a larger obect in space
telescope a instrument that magnifies distant objects
universe the space that consists of everything
light year the distance light travels in one year
speed of light 186,000 miles per second
galaxy a group of millions of stars held together by gravity
Milky Way Galaxy the galaxy the earth is in
constellations patterns of stars in the sky that have been identified and named
axis the imaginary line around which the earth spins. It is resposible for the change in seasons
phases of the moon the change in appearance of the moon because of the reflected light of the sun
Created by: dimickb
Popular Earth Science sets

 

 



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