Looking out into the depth and width of the universe is a big darn job, but luckily we've got big darn telescopes to do it with. Not only are they big, but a lot of these telescopes are pretty crazy looking, too, as astronomers find new methods in penetrating the heavens. A lot of telescopes use one mirror, but some use two. There's even an observatory that skips a one-telescope solution, and just goes for four mega 'scopes.
Kick off your journey by hitting up the gallery below to see six of the world's biggest, craziest and most powerful telescopes, from the inside and out.