Eli5: why are images of black holes so blurry and not better quality?
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Because they’re very far away, and as we’ve got radio telescopes across the entire earth we’re already at maximum resolution.
For Sagittarius A* (the more recent image), you’ve also got to contend with the fact that you’ve got half the Milky Way in between earth and the black hole. This is why M87* was the first to be photographed despite being further away.
The only real way to improve resolution would be to place more telescopes in space, but you’d need a few.
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