Astronomical observatories have been available since ancient times, and many cultures set aside special sites for astronomical observations. The thing modern observatories have that was missing from these older observatories until about 1610 was:
A) a dark site, where lights did not get in the way
B) graduate students or other assistants for sharing the astronomer's work
C) a method of keeping good records
D) a way of measuring from what general direction in the sky a beam of light was coming
E) telescopes

Question

Quizplus · Accepted Answer

The introduction of telescopes in modern observatories revolutionized astronomical observations, allowing for much greater detail and accuracy in observations than was possible with the naked eye alone.

Astronomical Observatories Have Been Available Since Ancient Times, and Many