Thanks for all the information, everyone. I was sure there had to be some reason why it wouldn't work (otherwise someone else would have already done it), I was just more interested in how and why it wouldn't. And wow, I had no clue a mirror would have to be 50,000 km wide to image even a...
I'm just a bridge engineer and amateur astronomer, so I'm hoping someone here with more advanced expertise in light waves and reflective surfaces can help me. Basically I was wondering how big a space telescope's primary mirror would have to be in order to view an exoplanet 10 or so light years...