Geoff Anderson describes the history of the telescope, from the very beginning, to today’s space telescopes. He discusses the problems which occurred with the Hubble space telescope. Now there are plans for even bigger instruments. Current telescopes are up to 10 metres in diameter. And there are plans for instruments up to 100 metres in diameter!

https://www.abc.net.au/radionational/programs/scienceshow/telescopes—a-400-year-history/3380628