Which of the following represents the shortest distance?
A) One parsec
B) One astronomical unit
C) One light-year
D) One right ascension

Question

Quizplus · Accepted Answer

One astronomical unit (AU) is the shortest distance among the options given. It is defined as the average distance between the Earth and the Sun, approximately 93 million miles or 150 million kilometers. A parsec is much larger, about 3.26 light-years, and a light-year is the distance light travels in one year, about 9.461 trillion kilometers. Right ascension is not a measure of distance but an angular measurement used in the celestial coordinate system.

Which of the Following Represents the Shortest Distance