'Deployed in space, the Hypertelescope diameter may be extended at least eight to ten times more than the diameter of the Earth..it will produce with sharpness some images of the surface of an extrasolar planet at approximately 10 lightyears of our system'
hypertelescope.org/hypertelescope…

🗡️🦉🛡️ It's called interferometery. Basically, you combine lots of small telescopes to simulate one big telescope.