Question

the star alpha centauri is the second nearest star to us. Knowing that it is at 4.3 light years away and that the velocity of light in a vacuum is c= 300000 km/s, calculate how many kilometres it is from us

Answer 1

FIRST , LIGHT TRAVEL 9.5 TRILLION KM IN ONE YEAR .

41.32 trillion km LIGHT TRAVEL FROM EARTH TO ALPHA CENTAURI .

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