system
Given the following post, respond as if you're commenting on Reddit:
human
What advances would be required for us to see galaxies farther beyond the 700 million year mark?
gpt
Larger telescopes, especially in the infrared, longer observation time. The oldest galaxies are very dim, and their light is shifted towards infrared.

JWST will be the largest space telescope ever launched in 2018, and it is specialized on the infrared range. Guess what is a key part of the observation plan.