the essence of water on Earth

[thinking]

the fundamental thinking is that astronomical objects such as asteriods etc. supply Earths water

the problem I have with thinking is this , why do these objects have any more ability to produce water than Earth its self ?

if objects that have landed on Earth have water within them , then why ?

[Enmos]

Because it was simply to hot in Earths region of the solar system for condensed water to exist during the formation of the solar system.

[thinking]

Because it was simply to hot in Earths region of the solar system for condensed water to exist during the formation of the solar system.

perhaps but I'm figuring that water would have been produced and existed long after this on Earth

as well how would asteriods have water , where would the asteriods water come from ?

[Enmos]

perhaps but I'm figuring that water would have been produced and existed long after this on Earth

as well how would asteriods have water , where would the asteriods water come from ?

From the original nebula.

[thinking]

“ Originally Posted by thinking
perhaps but I'm figuring that water would have been produced and existed long after this on Earth

as well how would asteriods have water , where would the asteriods water come from ? ”

From the original nebula.

how ? the original nebula would have been hot as well

[Enmos]

how ? the original nebula would have been hot as well

Yes, but the nebula only consists of gas collapsing under it's own mass.
Eventually the center gets dense enough to form solid materials, which leaves the gaseous materials confined to the outer edges.

[thinking]

“ Originally Posted by thinking
how ? the original nebula would have been hot as well

Yes, but the nebula only consists of gas collapsing under it's own mass.
Eventually the center gets dense enough to form solid materials, which leaves the gaseous materials confined to the outer edges.

I'm not following here ;

nebula is a gas , which is hot , condenses , forms solid materials , but leaves a gas , at the outer edges which do not become a solid and.....( is not water in the form of ice , solid )

[Hercules Rockefeller]

the fundamental thinking is that astronomical objects such as asteriods etc. supply Earths water


It is? May I have a reference for that?

I was of the understanding that the Earth's water came from the process of planetary formation. Extraterrestrial sources of water, such as asteroids, may have added to it but doesn't represent the major source.

Or is that one in the same thing given that the bodies striking the Earth and donating water all came from the initial formation of the Solar System?

[thinking]

“ Originally Posted by thinking
the fundamental thinking is that astronomical objects such as asteriods etc. supply Earths water


It is? May I have a reference for that?

I watched a program on this , be darned if I can rememeber the program but nevertheless it seems to be what mainstream thinking is

I was of the understanding that the Earth's water came from the process of planetary formation. Extraterrestrial sources of water, such as asteroids, may have added to it but doesn't represent the major source.

this would seem more reasonable

Or is that one in the same thing given that the bodies striking the Earth and donating water all came from the initial formation of the Solar System?

considering the trillions of gallons of water in our oceans I think your more on the right track in your above statement

[PieAreSquared]

I kind of like the passing through the tail of a comet idea

[Bishadi]

the fundamental thinking is that astronomical objects such as asteriods etc. supply Earths water

the problem I have with thinking is this , why do these objects have any more ability to produce water than Earth its self ?

if objects that have landed on Earth have water within them , then why ?

Lots of oxygen in the atmosphere.

Sun spits hydrogen ALL DAY LONG (and even sometimes at nite too, uh uhhh)


The auroras are showing you how the oceans formed.

Now gooooo way way back to the 250k extinction. Earth's oxygen levels were at about 35% (now 21ish) and then the 'hypothesis' is........ that PERHAPS a solar flare hit the earth during one of its magnetic field reversals.

Every 11 yrs the sun reverses its poles and the sun spots share a huge activity during these occurances. Solar flares or coronal mass ejections, send lots of mass throughout the solar system (documented, recorded)

Well the earth reverses its poles on average about ever 700k years (see hawaii basalts, its all recorded)

and when the earth's poles reverse, there is no magnetosphere and ouch, what a hot day it would be upon earth to have a few billions tons of hot ionized mass running into the earth with a 35% oxygen atmosphere; the reactions would be immediate and the remnant is water.

(after 25o ext, the earths oxygen levels were reduced to roughly 10%)

so wants to do the math

That is why i say our oceans came from.

[cosmictraveler]

Dark matter is actually tiny water crystals. :)

[kaneda]

The accretion disk which formed the solar system did so with a cold start. Had the sun formed early on, gas giants Jupiter and even Saturn would not have formed where they did and as they did. The early solar wind would have blown their material into the outer reaches of the solar system before gravity could form the gas giants. The sun was a late starter, so very likely almost all the Earth's water was there from the start.

[kaneda]

Dark matter, if it exists is undetectable other than by gravity. We can detect water in space if we can get a spectrum from/through it. Even by the scattering of starlight.

[Nasor]

(after 25o ext, the earths oxygen levels were reduced to roughly 10%)

so wants to do the math

That is why i say our oceans came from.

The mass of oxygen in the water of the oceans is about 1000x the mass of the oxygen in the atmosphere. Do the math, indeed.

[eburacum45]

A series of simulations by Raymond, Quinn and Lunine suggest that some planets in the habitable zone of sun-like stars will have less water than the Earth, while others will have much more-
http://arxiv.org/ftp/astro-ph/papers/0510/0510285.pdf
see figure 5; one planet there has 100x the Earth's water, making it a so-called waterworld with oceans nearly a hundred kilometers deep.

The Earth probably got most of its water during formation, although the impact that formed the Moon, and subsequent impacts of kuiper belt comets, may have adjusted the ocean levels significantly.