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Title : Phosphorus Essential for Human DNA -- Rare in our Solar System and May have been Non-Existent on Early Earth
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Phosphorus Essential for Human DNA -- Rare in our Solar System and May have been Non-Existent on Early Earth

more than 13 trillion years ago at least one of the domains of life may have begun in the misty clouds. If restricted to the Milky Way, which is 13.6 billion years, the first chemical combinations would have had billions of years to become an organism capable of replicating a DNA genome long before the existence of the Earth .It believed to be more likely Nebular clouds means to synthesize and promote the evolution of molecules necessary for the origin of life. The building blocks of DNA could have been generated or combined within interstellar clouds and DNA would become part of the complex molecular-amino acid protein. Hydrogen, oxygen, carbon, calcium, sulfur, nitrogen and phosphorus, for example, is continuously irradiated by the ions, which can generate small organic molecules that evolve large complex organic molecules that result in the formation of amino acids and other compounds.
phosphorus, for example, is rare in our solar system and may have been nonexistent in the early Earth; Phosphorus is essential for making DNA.
Fast forward 4.6 billion years on Earth the steps leading from the random mixing of chemicals for the first nano-particles probably require hundreds of millions and even billions of years before the first self-replicating molecular compound it was formed. Even after billions of years, the first replicon may not have possessed DNA.

It seems that we are in a "local bubble" in a network of cavities in the interstellar medium, probably carved by massive explosions of stars millions of years ago. the interstellar medium (or ISM) is the matter that exists in the space between star systems in a galaxy . This area includes gas in ionic form, atomic, molecular and dust and cosmic rays. interstellar space is filled and gently blend into the surrounding intergalactic space.
the ISM plays a crucial role in astrophysics precisely because of its intermediary role between stellar scales and galaxies with stars that form within the densest regions of the ISM and molecular clouds, and replenishes the ISM with the matter and energy through planetary nebulae, stellar winds, and supernovas.Esta interaction between stars and the ISM helps determine the speed at which a galaxy depletes its gaseous content, and therefore life training stellar active.
best estimate of NASA astronomer depicted in the map (below) of around 1500 built from multiple observations and deductions light years. Currently, the Sun is going through a local interstellar cloud (LIC), shown in violet, which is flowing away from the Scorpius-Centaurus young stars Association.
The LIC resides in a hole low density in the interstellar medium (ISM) called the Local Bubble, shown in black. Nearby, molecular clouds high density including the Aquila Rift surround regions of star formation, each shown in orange.
The Gum Nebula, shown below in green, is a region of hot ionized hydrogen gas. This complex nebula is thought to be a supernova remnant over a million years, extending across the southern constellations Vela and Puppis. Inside the Gum Nebula is the Vela supernova remnant, shown in pink, which is expanding to create fragmented shells of material like the LIC. Future observations will help astronomers learn more about the local galactic neighborhood and how they might have affected the past climate of the Earth.
polarized radiation in the cloud nebula leads to the formation of protein , and then DNA nucleobases. The combination of hydrogen, carbon, oxygen, nitrogen, cyanide and several other elements, could create adenine, which is a DNA base, while oxygen and phosphorus could base pair ladder DNA. Glycine has also been identified in interstellar clouds.
In the image at the top of the page, the pink cloud in the center is a new nebula that may be the result of a star swallow an embryonic planet. The green spot is a place where the material ejected from a radius of the star is hitting into the surrounding material.

source: DailyGalaxy

"Phosphorus Essential for Human DNA -- Rare in our Solar System and May have been Non-Existent on Early Earth", article source: riseearth.com

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