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  • Rights: The University of Waikato Te Whare Wānanga o Waikato
    Published 18 June 2019 Referencing Hub media

    Planets and stars are formed when dust and small pieces of matter clump together and attract nearby matter – eventually becoming a massive object such as a planet. If enough mass is present, the matter is crushed together and ignites as a star.

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    To demonstrate the concept of planet and star formation, place a few marbles on your gravity well. Roll a marble or two onto the sheet. The marbles eventually group together to make a clump that attracts the other objects.

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