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    Question

    The shape of our Milky Way galaxy is

    A circular Correct Answer Incorrect Answer
    B elliptical Correct Answer Incorrect Answer
    C spiral Correct Answer Incorrect Answer
    D None of the above Correct Answer Incorrect Answer

    Solution

    The Milky Way is a barred spiral galaxy 100,000-120,000 light-years in diameter containing 200-400 billion stars. It may contain at least as many planets, with an estimated 10 billion of those orbiting in the habitable zone of their parent stars. The Milky Way is the galaxy that contains our Solar System. This name derives from its appearance as a dim "milky" glowing band arching across the night sky, in which the naked eye cannot distinguish individual stars.

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