What if — just maybe — we find extra-terrestrial life in the oceans of Europa, a little moon circling Jupiter? If we do, , don't expect that oceanic alien to be very big. Or very scary. Or even very visible. Nothing like this ...
The "top predator" on Europa, Henderson reports, is likely to be "a fearsome creature with the mass of one gram." That's three one-hundredths of an ounce.
We wouldn't be able to talk to it. It wouldn't have much on its mind since creatures that small probably don't have minds.
The sad fact is extra-terrestrials are much less interesting than they used to be.