What is parallax?
A) distance to an object, measured in parsecs
B) angle taken up by the size (e.g., diameter) of an object, as seen by an observer
C) shift in angular position of an object as it moves in space
D) apparent shift in position of an object as the observer moves

Question

Quizplus · Accepted Answer

Parallax is the apparent shift in the position of an object when observed from different points, typically used in astronomy to measure distances to nearby stars based on the Earth's orbit around the Sun.

What Is Parallax