Question

Why are astronomers continually building larger and larger telescopes?

Answer 1

Telescopes have three functions
1 to collect more light
2 To resolve close objects
3 To magnify.

Explanation:

To collect more light we have to build large sized mirrors..Then only we can see very faint objects.
To separate two close objects a also we need large aperture
So by making large telescopes we can see more faint objects and more deeper into universe..