Planet K2-18b, an apparent water world 124 light years away, has been seen as a promising location in the search for aliens, ...

Add Yahoo as a preferred source to see more of our stories on Google. One of the largest searches for alien intelligence in history is nearing completion, thanks to the help of more than 2 million ...

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...