Modern telescopes are capable of seeing bright galaxies up to about

Modern telescopes are capable of seeing bright galaxies up to about 10000 millions light years away

Explanation:

A telescope is a tool that astronomers use to see faraway objects. Most telescopes work by using curved mirrors to gather and focus light from the night sky. The bigger the mirrors or lenses, the more light the telescope can gather.

Modern telescopes gather information from the electromagnetic spectrum far beyond the range of visible light.

The farthest bright galaxies, that the modern telescope is capable of seeing is 10000 millions light years away.