What Is Blood Sugar And Why Is It...
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No best answer has yet been selected by charisma--. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.We've never actually been to any other planet to check, with the exception of the mars lander and that wasn't designed to come back.
However, the old argument arises. If there are billions of stars, there are billions of planets. So we'd be pretty arrogant to think we're alone.
Personally, if I was an alien observing Earth, I'd turn tail and head home.
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