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3 November, 20:49

The nearest Black hole is 7800 light years from Earth. Light travels at 186,000 per sec how many miles away is it?

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  1. 4 November, 00:48
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    Distance=speed*time

    speed of light in miles=3.6 km/hr

    7800 light years=7800 (9.4607*10^12) km

    thus the distance in miles will be as follows:

    1 mile=1.60934

    thus the distance from each to black hole is:

    [7800 (9.4607*10^12) ]/1.60934

    =4.5853244*10^16 miles
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