Question

A parsec is the distance that light travels in 3.26 years. How many years does light takes to travel travel 3.0 parsecs?How many kilometers make 3.0 parsecs?

Answer 1

9.78 years. 92.57 trillion km.

Explanation:

`1 arc sec= (1/3600)^o=(1/3600)(pi/180)` radian=4.848 E-06 radian.

1 AU = 149697871 km

1 parsec = 1 AU/(1arc second in radians) = 30.86 trillion km