* Largest mirror: The Extremely Large Telescope (ELT) currently under construction in Chile will have a primary mirror 39.3 meters in diameter, making it the largest optical/near-infrared telescope.
* Highest resolution: The James Webb Space Telescope (JWST), currently in space, is considered the most powerful space telescope, with its infrared capabilities allowing it to see farther into the universe than any previous telescope.
* Strongest radio waves: The Five-hundred meter Aperture Spherical Telescope (FAST) in China is the world's largest single-dish radio telescope, capturing faint radio signals from the universe.
So, depending on your definition of "powerful," the answer could be ELT, JWST, or FAST.
