[rich_sasha]

I know this is about a fundamental physics question, but what jumps out at me is that JWST can resolve individual Cepheids at 130m light years distance !!! What an incredible marvel of engineering.

[ck2]

I cannot wrap my head around the idea Giant Magellan Telescope will have at least four times the resolution (in some situations up to 20x) as JWST in a few years

Now they need to build a second JWST and send it to opposite side of solar system for Very Long Baseline Interferometry :-)