What is the main function of a telescope?
it brings scientists closer to distant objects.
it magnifies light received from distant objects.
it measures the temperature of distant objects.
it measures the wavelengths of incoming light rays.

It magnifies light received from distant objects.

Explanation:

Telescope is an arrangement of lenses and mirrors which enable us to see us the objects which are far away from us. This happens as the telescope magnifies the objects. It uses a convex lens or concave mirror to collect the light and magnify it. Convex lens and concave mirror are used to see things magnified.

In telescope, either two convex lenses of different focal length or a concave mirror and a convex lens of different focal length are used for magnifying.