Of course there isn't a planet [u]exactly[/u] like ours. But its inevitable that there is one similar.
English
-
Is it? I don't think so.
-
Why wouldn't it be? Our planet isn't a special size, no special/rare elements that are required for our life, proper distance from the sun isn't unique. Only thing we know about our own planet that we cant know for sure about most others is our magnetic field from our liquid core.