If the star alpha centauri, 4.37 light-years distant from the earth, were to explode this instant, when would we be aware of this event?

Question

Physics

Carmen Park

8 January, 10:41

If the star alpha centauri, 4.37 light-years distant from the earth, were to explode this instant, when would we be aware of this event?

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Answers (1)

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Rene Larsen · Answer 1

A light year is a unit for length that is used for very great distances. This is approximately equal to 9.4607 x 10^12 km. Multiplying this distance to 4.37 will give us an answer of 4.134 x 10^13 km. Dividing this by the speed of light, 3 x 10^8 m/s will give us an answer of,

137810863.3 s

Also equal to 4.37 years.