From Cody Dow:

Re: Like Earth, if you overlook the lava everywhere? (Feb. 4): Well I am 13 and no genius but how has nobody figured this out yet. if you want to find a livable planet look for a planet of molten lava. sure you might find a planet with life in a telescope but it is millions of light years away so it had life millions of years ago. Now it is probaly a dormant planet with almost no signs of life ever being there. but if you find a planet of molten lava that is a million light years away that means it was molten lava a million years ago. Now that planet could easily be like earth now. how couild NASA have not figured that out. its so simple. please reply me.