ORDER OF THE UNIVERSE

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THE UNIVERSE A huge wide open space that holds everything from the smallest particle to the biggest galaxy Scientists have found that the Universe is growing outward in every direction It is made up of hundreds of superclusters

SUPERCLUSTER Group of neighboring clusters of galaxies

LOCAL GROUP Cluster of galaxies including the Milky Way and Andromeda

GALAXY Consists of billions of stars, gas, and dust held together by gravity Stars – a big ball of burning gas in space

PLANETS 8 objects that revolve around the sun They do not have as much mass as stars and cannot make their own light

EARTH One of 8 planets that revolve around the sun Moon – Earth’s only natural satellite, which is an object that revolves around a bigger object

ASTEROIDS A small irregular shaped object that revolves around the sun

COMET An object made up of ice that travels in an orbit around the sun

METEOROID An object entering the Earth’s atmosphere that is smaller than an asteroid