Will there ever be solid evidence of life outside of Earth. (Astronomically speaking there pretty much has to be) But will there ever be irrefutable evidence?
by 
Mr. Moose
ANSWERS: 3
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'Ever' is a long time. With our current science, it's theoretically impossible for aliens to visit us or for us to visit them. That is if you're referring to an advanced species...finding 'life' like micro-organisms or bacteria, outside of earth, is very possible if not already done. (I'm not up-to-date on current NASA discoveries.)
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its unknown-cant tell at this point
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I reckon it will happen sooner or later.. With all this stuff happening on Mars, and NASA or whoever saying there is evidence of previous river beds on Mars, who knows?! They might discover something neat in the near future. :)
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