Question

The distance of the nearest star, Proxima Centauri, from the Earth is 4.0 x 10^13 km. Express it in light year.

February 4, 2024

Answer

1 Light year = 9.46 × 10¹² km

or 9.46 × 10¹² km = 1 Light year

∴ 4.0 × 10¹³ km = $1\over 9.46 × 10^12$ × 4.0 × 10¹³

= 4.2 light years.

Hence, the distance of the nearest star from Earth = 4.2 light years.

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