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What is the main idea and list a least 2 details about the main idea?
Edwin Hubble came up with a way to classify galaxies by shape.He labeled elliptical galaxies E.He classified by th size of the galaxy's nucleus and the tightness of it's arms.

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    Isn't this paragraph all about shapes?

    I'll be glad to check your answers.

  • Science -

    It is suppose to be this
    What is the main idea and list a least 2 details about the main idea?
    Edwin Hubble came up with a way to classify galaxies by shape.He labeled elliptical galaxies E.He classified them further by shape,using the numbers 0-7.Spiral galaxies can be either normal,labeled S,or barred spiral,labeled SB.They are then classified by the size of the galaxy's nucleus and the tightness of it's arms.

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    What do you think is the main idea?

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    Spiral galaxies can be either normal,labeled S,or barred spiral,labeled SB.

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    That is not the main idea.

    Hint: The main idea is usually in the first sentence.

  • Science -

    Edwin Hubble came up with a way to classify galaxies by shape.

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    Right! That's the main idea.

    What are the two shapes of the galaxies?

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    i don't know can i have a hint

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