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Question
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction is called _________.
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction is called _________.
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Solution
The correct option is C galaxy
Huge collections of stars, dust and gas are known as galaxies. They contain several million of stars and their size can range from few thousands to several hundred thousands light years. They have different shapes and brightness and can be found alone, in pairs or in clusters. Our solar system is a part of the Milky Way galaxy.
Huge collections of stars, dust and gas are known as galaxies. They contain several million of stars and their size can range from few thousands to several hundred thousands light years. They have different shapes and brightness and can be found alone, in pairs or in clusters. Our solar system is a part of the Milky Way galaxy.
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