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26 November, 10:20

Our galaxy, the Milky Way, has a diameter of about 100,000 light years. How many years would it take a spacecraft to cross the galaxy if it could travel at 99% the speed of light?

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  1. 26 November, 13:11
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    It takes to a spacecraft 100,837.13 years to cross the galaxy if could travels at 99% the speed of light.

    Explanation:

    d = 9.461 * 10²⁰m

    V = 297 * 10⁶ m/s

    t = d/V

    t = 3.18 * 10¹² seconds = 100837.13 years
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