The nearest star is Alpha Centauri, at a distance of 4.3 light-years from Earth. A light-year is the distance that light travels in one year (365 days). How far away, in kilometers, is Alpha Centauri from Earth?
The nearest star is Alpha Centauri, it is at a distance of 4.3 light-years from Earth.
Distance between Alpha Centauri and Earth in kilometers = ?
1 light year = 9.4611012 km.
Therefore, 4.3 light years in Km is :
= 4.3 9.461