How Comets carry seeds of life across space

http://www.latimes.com/science/sciencenow/la-sci-sn-oxygen-rosetta-comet-20151027-story.html

Earlier posts in this blog have postulated that life does not exist just on earth but is rather widespread across the universe albeit in planets too far from each other to make contact, it further postulated that life spreads across space through comets as bacteria and viruses, the only form of life that may survive as frozen life in the long journey from one planet to another and that comets may be formed as fragments of life bearing planets.

Once such bacteria arrive on a planet that has sunlight, temperatures in the appropriate range and gravity enough to hold an atmosphere etc. for life to exist, then life begins to unfold slowly on the planet over billions of years. True such planets would be rare but seeing that the universe is a virtual infinity of stars they are likely to be many. The earlier articles were written more than eight years ago and can be found as early posts in this blog. Just check out the archives in the left sidebar. Since then new discoveries have substantiated this theory and none has gone against it. The most recent is discoveries of the Rosetta mission. It has found oxygen, water and carbon on the comet, all indicating that this is a fragment of a planet that had life on it.

http://www.latimes.com/science/sciencenow/la-sci-sn-oxygen-rosetta-comet-20151027-story.html

 

New Evidence form Rosetta Mission Supports Pansemeria Hypothesis

Discovering signs of life on a comet

How life came to Earth

Some of the earliest posts of this blog dating back to 2006 suggested that seeds of life were brought to earth by comets. The theory can be reached quickly by clicking archive links in the side bar. The theory named Pansmeria, an adaptation and detailing of the Panspermia hypothesis, then went on to develop a model of how life emerged on Earth and how it may emerge similarly on other habitable planets of the universe where temperature is in the range to permit presence of liquid water, sunshine conducive for photosynthesis and gravity sufficient for holding an atmosphere. Some of the precise details of the theory may need slight revision but this blogger stands by the overall picture as originally presented. Every new evidence that has emerged from science since has supported it.

Now new evidence from the Rosetta mission support the founding principle of the hypothesis of eight years ago, that comets can bring life to Earth. See this report from CNN,

http://edition.cnn.com/2015/07/30/world/rosetta-mission-discovery/index.html?sr=cnnitw

To quote from this report,

The European Space Agency (ESA), which is leading a consortium that includes NASA, announced that the mission to explore Comet 67P has discovered 16 organic compounds, described as "carbon and nitrogen-rich."

The agency says on its website that the discovery, made by the Philae lander includes four compounds that have never before been detected in comets.And it adds that some of the compounds "play a key role in the prebiotic synthesis of amino acids, sugars ... the ingredients for life."

"For example, formaldehyde is implicated in the formation of ribose, which, ultimately features in molecules like DNA. "The existence of such complex molecules in a comet, a relic of the early Solar System, imply that chemical processes at work during that time could have played a key role in fostering the formation of prebiotic material," it says.

However it seems that the scientists are still off key on the precise mechanisms as evident from the following comment in the same report,

Commenting on the findings, lander system engineer Laurence O'Rourke told CNN it was an important discovery. "If you apply energy to such organic compounds ... like a comet hitting a planet ... it could lead to the creation of amino acids which make up proteins, which are the basis of life itself," he said.

The more precise mechanisms are explained in this blog in the indicated early posts that can all be found at the following archive link:

http://alienaccount.blogspot.in/2006_09_01_archive.html.

Just take care that the posts are presented in reverse chronological order on this page.

Image developed from a NASA image at:

http://www.jpl.nasa.gov/images/rosetta/20141107/rosetta20141107-16.jpg

Comets are not Vagabonds

Comet Lovejoy image from NASA (modified before use here)

Those who believe in a supreme Universal Intelligence believe that nothing major happens in the universe unless the Universe wills it. While scientists recognize the supreme organization in planets, stars and galaxies, some regard comets as wayward objects. However, there are others who see this as a necessity of the overall design. An earlier post (see here) in this blog described how comets may be regarded as the spaceships of God. Their icy interiors can bring genes of life stored in bacteria, the only form of life that survives hibernation over millions of years, acting as the seeds of life on new planets, where they awaken with the scent of moisture and a conducive climate. The genes of all life forms including humans are carried in bacterial genes. There is much more of that in earlier posts of this blog. Presently the earth is witnessing the spectacular comet Lovejoy in its vicinity.

Without comets, perhaps there would have been no life on earth. It is also true that some comets bring destruction to a planet. Without some earlier ones that destroyed the dinosaurs perhaps human life would not have emerged. Some predict some more such destructive collisions in future and there might be a purpose behind it too that is not fully comprehensible to the finite mind of humans.Regarding some speculated destructions in the near future see:
http://someitemshave.blogspot.in/2015/01/apocalypse-during-2025-2050.html