nearest star distance of 4.3 light years proxima centauri is the nearest star to our solar system. what is the distance to proxima centauri kilometers? the speed of light in space is 2.998 x10^8 m/s.
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1 light year is 9.46 x 10^15 m which converts to 9.46 x 10^12 km. So 4.3 light years is 4.3 x that.
1 answer