Physics of extraterrestrial life: aliens should be similar to earthlings

By the end of this century, says astrophysicist Martin Rees, we need to answer the question, we live in a multiverse or not, and how different the laws of physics in its constituent universes. The answer to this question, according to Rice, determine, “how should we interpret “Bioprocessing” the universe in which we live (which we share with aliens with whom one can establish contact)”. The same fundamental laws apply to the whole region that we can explore with telescopes.

If this were not so — if the atoms behaved in an “anarchic” — we would not have made progress in understanding the observable Universe. But the observed region, says Rice, can be not only a physical nature; some cosmologists believe that “our” Big Bang was not the only one — and that physical reality is large enough to cover the entire “multiverse”.

Will look like aliens?

Even conservative astronomers, concludes Rice, “confident that volume of space-time in visual range of our telescopes — what astronomers usually call “the universe” is only a tiny part of the consequences of the Big Bang. We assume that beyond this horizon if the set of unobservable galaxies, each of which (together with reasonable life in it) evolves like ours.

Charles Cockell, astrobiology University of Edinburgh, suggests that life on Earth may be a template for life in the Universe, comparing it with the standard model constants or equations of life.

Regardless of how different conditions on distant planets, all of them, presumably, will have the same laws of physics — from quantum mechanics to thermodynamics and gravity. And life, according to Cacella, it’s just a living matter, “able to reproduce and evolve.” If such biology is everywhere in the Universe, we will find it surprisingly familiar not only externally but also internally, deep in cell engineering based on carbon.

There are equations and rules, which are not restricted to living systems that underlie the functioning of life. These equations, as far as we can tell, the same throughout the Universe. To understand how could look life in other places, we only need to study in detail how it works here.

The repetition of evolution, DNA, RNA, ATP and the Krebs cycle — fundamentals of biology — is likely to happen again, here or in distant worlds, said George Johnson of the New Yorrk Times. Single cells are then re-connect the benefits of metazoans life, unless there is something like our familiar earthly menagerie.

The laws of biology repeat the physical laws that appear everywhere — gravity, for example, exists everywhere, not only in our Solar system. Limitations also widespread organic molecule on Earth or anywhere else, still disintegrate at high temperatures and are deactivated at low. Certain ingredients, in most cases, essential for life — carbon is the best element to create a growing life, and water is the ideal solvent to move.

We used to live, which inhales oxygen and there under blue skies. Although in nature there are many worlds like ours, conditions at the entire Universe will be very different. And while our equations will work, life will appear in an infinite number of variations — each time different — and yet similar, because its development will depend on the equations underlying the physical universe.

“The laws of physics to guide living beings in limited form,” he says. “They narrow the scope of evolution. Alien life may have a lot in common with life here.”

“Get in the ocean,” says Cockell. “There are creatures with slim, streamlined bodies and for certain reasons, to move faster in the water.” It’s worked for hundreds of millions of years: dolphins, sharks, ichthyosaurs, mammals, fish, extinct dinosaurs, they were all externally comparable. It looks like, even if the genealogies are different.

On land most animals received limbs to move; in the sky, whether pterodactyls and pigeons, “also follows the laws of aerodynamics”. Even the butterflies, though different in patterns and colors, also have wings, following the equation. If the wing is too small, and the butterfly could not fly. The details are infinite, but physics limits the form.

Atoms combine, creating even more complex structures that are designed to capture energy from the environment and create copies of themselves to continue this process. This formula of life on our planet has worked from the beginning. Why it won’t work in other places? Tell us in our chat in Telegram.

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