?An astronomical unit (AU) is equal to the average distance from Earth to the Sun, about
Chapter 1, Problem 53(choose chapter or problem)
An astronomical unit (AU) is equal to the average distance from Earth to the Sun, about \(92.9 \times 10^{6} \mathrm{mi}\). A parsec (pc) is the distance at which a length of 1 AU would subtend an angle of exactly 1 second of arc (Fig. 1-8). A light-year (ly) is the distance that light, traveling through a vacuum with a speed of 186 000 mi/s, would cover in 1.0 year. Express the Earth–Sun distance in
(a) parsecs and
(b) light-years.
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