Who Build the Moon?

[cthulhu]

So , here we go...

To me this topics are connected, and it seems that the scientific proof is now out there, that we all are Aliens:

Extraterrestrial ribose and other sugars in primitive meteorites
PNAS first published November 18, 2019 https://doi.org/10.1073/pnas.1907169116

Significance

Ribose is an essential sugar for present life as a building block of RNA, which could have both stored information and catalyzed reactions in primitive life on Earth. Meteorites contain a number of organic compounds including components of proteins and nucleic acids. Among the constituent molecular classes of proteins and nucleic acids (i.e., amino acids, nucleobases, phosphate, and ribose/deoxyribose), the presence of ribose and deoxyribose in space remains unclear. Here we provide evidence of extraterrestrial ribose and other bioessential sugars in primitive meteorites. Meteorites were carriers of prebiotic organic molecules to the early Earth; thus, the detection of extraterrestrial sugars in meteorites implies the possibility that extraterrestrial sugars may have contributed to forming functional biopolymers like RNA.

Abstract

Sugars are essential molecules for all terrestrial biota working in many biological processes. Ribose is particularly essential as a building block of RNA, which could have both stored information and catalyzed reactions in primitive life on Earth. Meteorites contain a number of organic compounds including key building blocks of life, i.e., amino acids, nucleobases, and phosphate. An amino acid has also been identified in a cometary sample. However, the presence of extraterrestrial bioimportant sugars remains unclear. We analyzed sugars in 3 carbonaceous chondrites and show evidence of extraterrestrial ribose and other bioessential sugars in primitive meteorites. The 13C-enriched stable carbon isotope compositions (δ13C vs. VPDB) of the detected sugars show that the sugars are of extraterrestrial origin. We also conducted a laboratory simulation experiment of a potential sugar formation reaction in space. The compositions of pentoses in meteorites and the composition of the products of the laboratory simulation suggest that meteoritic sugars were formed by formose-like processes. The mineral compositions of these meteorites further suggest the formation of these sugars both before and after the accretion of their parent asteroids. Meteorites were carriers of prebiotic organic molecules to the early Earth; thus, the detection of extraterrestrial sugars in meteorites establishes the existence of natural geological routes to make and preserve them as well as raising the possibility that extraterrestrial sugars contributed to forming functional biopolymers like RNA on the early Earth or other primitive worlds.

https://www.pnas.org/content/early/2019/11/12/1907169116

I want to believe

[Johnz]

This is a really cool finding. But one way or another we're all just space dust anyway .

On a somewhat related note, this is an interesting read about the existence (or non-existencde) of alien intelligence: https://waitbutwhy.com/2014/05/fermi-paradox.html

[cthulhu]

Yes, that is a very interesting read, thanks for that! and it is totally related. I've heard about the Fermi Paradox but hadn't read such a good explanation and summary and conclusions, with such humour. Very funny!

If you're interested in science fiction literature, there's a marvellous chinese book out there, which also is related to the thoughts here. It's by Cixin Liu and here (germany) it's called The Tri-Solaris Trilogy. It's one of the best ever sci-fi readings i had. It's huge, epic and beautiful. In there i was confronted for the first time with the Possibility 4, the article mentions:

Possibility 4) There are scary predator civilizations out there, and most intelligent life knows better than to broadcast any outgoing signals and advertise their location.

But like all goood science fiction, it is more about the humans and culture.

Quote from the Fermi article:

Beyond its shocking science fiction component, The Fermi Paradox also leaves me with a deep humbling. Not just the normal “Oh yeah, I’m microscopic and my existence lasts for three seconds” humbling that the universe always triggers. The Fermi Paradox brings out a sharper, more personal humbling, one that can only happen after spending hours of research hearing your species’ most renowned scientists present insane theories, change their minds again and again, and wildly contradict each other—reminding us that future generations will look at us the same way we see the ancient people who were sure that the stars were the underside of the dome of heaven, and they’ll think “Wow they really had no idea what was going on."

clever monkeys with technology, barely out of the caves and the trees....

[Johnz]

Glad you found it interesting. It's well researched and written. I like the fact that most of the presented theories are quite contradictory yet they all seem plausible and send you on wild imaginary rides.

I just looked up the Solaris Trilogy. Looks like it's called the Three-Body-Problem in English and I remember reading about it a while ago. It looks like a great read. I've added it to my 'books to get' list. Thanks for the tip!