A star with a large parallax:
A)is at a great distance from Earth.
B)is moving at a great speed with respect to Earth.
C)is at a short distance from Earth.
D)is moving at a slow speed with respect to Earth.
E)is not moving with respect to Earth.

Question

Quizplus · Accepted Answer

A large parallax indicates that the star is at a relatively short distance from Earth, as parallax decreases with increasing distance. Parallax is the apparent shift in the position of a nearby object against a distant background as seen from different perspectives. The larger the shift, the closer the object is. Therefore, a star with a large parallax is at a short distance from Earth.

A Star with a Large Parallax