The best site for placing a ground-based optical telescope is _________.
A) a mountaintop
B) a valley
C) in an urban setting
D) in a location that has few sunny days throughout the year

Question

Quizplus · Accepted Answer

Mountaintops are ideal for optical telescopes because they are above much of the Earth's atmosphere, reducing atmospheric distortion and light pollution, and often have more clear nights.

The Best Site for Placing a Ground-Based Optical Telescope Is