The Real Question About Extraterrestrial Life
- rabie soubra
- Sep 21
- 2 min read
People keep asking, "Is there life out there? Are we really all alone in this vast universe?"
The mathematical probability suggests that extraterrestrial life is quite likely. But in my opinion, this is the wrong question entirely.
The real question is whether extraterrestrial life is DNA-based or not, because that will explain everything about existence itself.
Our life is DNA-based because it evolved under Earth's specific circumstances, the availability of certain chemical elements in particular quantities, our climate, gravity, the presence of carbon.
DNA became our blueprint because of conditions unique to this planet.
But is this also the case elsewhere?
If we discover that extraterrestrial life is also DNA-based, it would suggest that DNA represents some kind of universal principle—that given the right conditions, life inevitably organizes itself around this particular chemical structure.
It would mean that the laws of biology, like the laws of physics, might be consistent across the universe.
But if extraterrestrial life evolved completely different chemical foundations, it opens up possibilities we can't even imagine.
What if life elsewhere isn't about carbon chains and protein synthesis?
What if it's based on silicon, or operates through entirely different mechanisms we haven't even conceived of?
The fact that we are DNA-based has fundamentally influenced how we imagine extraterrestrial life.
We picture them as big-headed, wide-eyed, green creatures with long arms and legs, essentially exaggerated versions of ourselves.
Even our most creative depictions of aliens are just variations on the DNA theme: humanoid forms with familiar anatomical features, just rearranged or enlarged.
This reveals our profound bias.
We assume that intelligence requires brains, that mobility requires limbs, that life requires the same energy synthesis processes that drive us.
We are creatures built around converting energy from our environment to sustain our biological functions, so we imagine aliens doing the same thing, just differently.
But what if extraterrestrial life isn't about energy synthesis at all?
What if consciousness can exist without the constant metabolic processes that define every living thing on Earth?
What if intelligence developed through completely different mechanisms that don't require the endless cycle of consumption and conversion that characterizes DNA-based life?
We might be looking for the wrong signatures entirely.
We search for water, for organic compounds, for signs of metabolic activity, because that's what life means to us.
But life based on entirely different principles might leave traces we wouldn't even recognize as biological.
If DNA is universal, it suggests that existence follows certain rules, that life, given the chance, will always organize itself in predictable ways.
But if DNA is just Earth's particular template of existence, then life might be far stranger and more varied than we can possibly imagine.
The answer to this question would tell us whether we're looking at a universe with consistent biological laws, or whether life is so variable that our Earth-based assumptions are completely useless for understanding what might exist elsewhere.
That's why asking whether extraterrestrial life is DNA-based matters more than asking whether it exists at all.
One answer would make us part of a universal pattern.
The other would make us just one impossible experiment among countless others, each stranger than we could ever imagine.






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