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28 December, 11:10

How long will it take light moving at 300,000 km/s to reach us from the sun?

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  1. 28 December, 11:26
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    The average distance from the sun to the Earth

    is about 152 million kilometers.

    That's (1.52 x 10⁸ km).

    Time to cover the distance = (distance) / (speed)

    Time = (1.52 x 10⁸ km) / (3 x 10⁵ km/s)

    = (506 and 2/3) seconds.

    That's 8 minutes 27 seconds.

    The popular number is "about 8 minutes".
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