sun is the only one energy source for earth

YES

sure, sun is the only one think who give energy to earth.

Actually the universe itself is a mystery...the sun ,the moon, the earth ,the stars....every thing leaves you amazed if you think deeply about them...every thing in the solar system works and functions precisely to time and measurements..isnt it a wonder that every thing ,that too very,enormously large ,works precisely and correctly without any predefined path or rule..its found that only earth has got life in it,but we arent sure that there is life in any of other planets..but may be in other planets ,life exists in other forms,i mean totally other forms.in earth life exists in the form that we see,but may be htat isnt the form of life in others..may be life exists there,but we cant see or feel,or even life existx in may be on rocks or ..even may be there isnt life which make those planets unique,may be its some other form..we know that its life which make earth unique,but they are totall yother planets and we cant say that the same form of life can be seen in other planets...according to me evrything is an mystery..and i dont think that mankind can solve evry mystery related to this universe...