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R association
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R association

astronomy
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The Information Architects of Encyclopaedia Britannica

Learn about this topic in these articles:

  • stellar association

    R associations consist of young, bright stars of intermediate mass (3 to 10 solar masses). Stars in this type of association are surrounded by patches of dust that reflect and absorb light from nebulae, and hence these associations are sometimes called reflection nebulae.

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    R associations consist of young, bright stars of intermediate mass (3 to 10 solar masses). Stars in this type of association are surrounded by patches of dust that reflect and absorb light from nebulae, and hence these associations are sometimes called reflection nebulae.

    Read More