Gliese 581 c
Remember the planet of burning ice? Well this one is its neighbor and scientists say that it is the most likely candidate for future colonization. It doesn’t spin so the bright side is super hot and the dark side is freezing cold but in between there is a small strip of temperate territory.
Smart, uh?
EDIT: actually this entire post looks like a mishmash of fact, outdated theory and rubbish.