I keep seeing reports about how all the planets similar to earth in other nearby planetary systems are now being discovered. Since we won't have the technology to send probes or go there ourselves for some time, all we can do is look at them. My question is: Could we ever get better resolution images of those planets with a telescope located in our solar system? In other words can we ever make telescopes that can zoom in on the surface of another planet in another planetary system or is it just physically impossible for us to collect that much light from something so far away? Wouldn't we need a telescope with a really big collection area to do so?