[E. Pluribus Unum]

"Life" on other planets may not look like life on Earth, or at least the life we think of. There are subterranean microbes that oxidize iron instead of oxygen. There are microbes that thrive in oceanic volcano vents.

Just because we don't find ET doesn't mean there isn't life.

[Dilbert San Diego]

Reminds me of an old Star Trek episode, on which they discovered silicon based life on a planet they visited.

The main storyline was that the living creature they discovered was silicon based and not carbon based, as the assumption had been that life as we know it is carbon based.

So, while life as we know it is carbon based, what if there is life as we don’t know it out there somewhere????