Any sci-fi idea about what extra terrestrial life would look like is as good as the next. All of them involve speculation from almost no data. If I had to bet

Any sci-fi idea about what extra terrestrial life would look like is as good as the next. All of them involve speculation from almost no data. If I had to bet though, I’d say that alien life is even more diverse than life on earth since it would necessarily involve multiple origins both natural and artificial.