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planetesimal hypothesis

n.
1.(cosmology) the theory that the solar system was formed by the gravitational accumulation of planetesimals

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    Idiom of the Day

    bawl out (someone) or bawl (someone) out
    to scold someone loudly
    The woman bawled out her child in the supermarket.



    1.
    I had to call the repairman because the washing machine was off ________—it began making terrible sounds and failed to clean the clothes thoroughly.

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