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  • Mona Evans

    Castor. Wow - what a star! Single to the eye, a triple in a telescope and six altogether. Illustration not to scale. bob king

  • Mona Evans

    The star Castor in Gemini. You can resolve it into three stars in a small telescope, but each of the stars has a companion. Castor is really a sextuple star system. (The diagram is not to scale.)

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