Water predates age of Sun ? Comes from elsewhere ?

[Mike Smith Cosmos]

Evidence in heavy water ratio seems to prove much of the water on earth came from a different source than our Sun .

 

Link :- http://rt.com/news/190832-water-earth-older-sun-system/

 

Mike

[Strange]

I'm sure it is very interesting ... but I would suggest checking the original source or some other more reliable source (which shouldn't be hard; there are few source less reliable than RT, which manages to make even the Daily Mail look like a newspaper).

 

For example: http://www.nature.com/news/earth-has-water-older-than-the-sun-1.16011

(I haven't read either in detail to know if the RT article is accurate or not. But my working assumption would be that it isn't. )

[imatfaal]

Here is the actual article http://www.sciencemag.org/content/345/6204/1590.short- paywalled I am afraid.

 

NB

 

No one has so far - but please don't post a non-paywalled version if you find one. Arxiv is ok - but other versions on web are probably copyright dodgy.

http://arxiv.org/pdf/1409.7398v1.pdf - ok so here is the preprint

The preprint is reasonalble accessible - and seems to bear out the initial OP.

 

It is all model and simulation based - ie we have Heavy to Normal water ratios [D/H]_H20 that we can measure in our oceans, in comets, in meteors etc. - the team have simulated and calculated what ratios they would expect if the heavy water was all formed within the protoplanetary disc and they are too low. I cannot comment on the validity of their claims.

[pantheory]

Not surprising. Intra-galactic clouds are known to contain water/ice. The bigger question I think is whether life can evolve in dense warm galactic clouds which contain rocks, water/ice and other matter particulates, could it evolve in asteroids or comets, or are planetary sized bodies and atmospheres needed? The only likelihood, I think, is that a lot of time would be involved in its creation.

Edited March 13, 2015 by pantheory

[imatfaal]

It might be your bigger question but it is certainly not the OP - and if you or others want to discuss it then the debate should be elsewhere

[Robittybob1]

I'm sure it is very interesting ... but I would suggest checking the original source or some other more reliable source (which shouldn't be hard; there are few source less reliable than RT, which manages to make even the Daily Mail look like a newspaper).

 

For example: http://www.nature.com/news/earth-has-water-older-than-the-sun-1.16011

(I haven't read either in detail to know if the RT article is accurate or not. But my working assumption would be that it isn't. )

What does RT stand for?

[Endy0816]

^RT = Russia Today(Funded by the Russian government)

[pantheory]

It might be your bigger question but it is certainly not the OP - and if you or others want to discuss it then the debate should be elsewhere

 

I was responding to the quotes in the link that the OP posted, and the question asked therein-- why is this important?

 

"Why this is important? If water in the early solar system was primarily inherited as ice from interstellar space, then it is likely that similar ices, along with the prebiotic organic matter that they contain, are abundant in most or all protoplanetary disks around forming stars," Carnegie's Conel Alexander, one of the leaders on the study, says."But if the early solar system's water was largely the result of local chemical processing during the sun's birth, then it is possible that the abundance of water varies considerably in forming planetary systems, which would obviously have implications for the potential for the emergence of life elsewhere."