A(n) _________ represents the distance that an imaginary star would have to be from Earth for its parallax to be exactly 1 arc-second if you were to move from an observation point in the center of the Sun to the center of Earth.
A)astronomical unit
B)kilometer
C)parallax
D)parsec

Question

Quizplus · Accepted Answer

The choice D, parsec, represents the distance that an imaginary star would have to be from Earth for its parallax to be exactly 1 arc-second if you were to move from an observation point in the center of the Sun to the center of Earth. The other choices, A (astronomical unit), B (kilometer), and C (parallax), do not accurately represent this distance.

A(n) _________ Represents the Distance That an Imaginary Star Would