The Zeta Reticuli star system is approximately 3.7 x 1014 km from Earth. Given that light travels at 300,000 km/s in space, how far away is this star system in light years?
A) 39 ly
B) 4.4 ly
C) 52 ly
D) 27 ly

Question

Quizplus · Accepted Answer

To find the distance in light years, divide the distance in kilometers by the distance light travels in one year. Light travels 9.461 x 10^12 km in one year. So, 3.7 x 10^14 km / 9.461 x 10^12 km/yr ≈ 39 ly.

The Zeta Reticuli Star System Is Approximately 3