Skip to comments.Comet's water 'like that of Earth's oceans'
Posted on 10/05/2011 6:41:44 PM PDT by decimon
Comet Hartley 2 contains water more like that found on Earth than prior comets seem to have, researchers say.
A study using the Herschel space telescope aimed to measure the quantity of deuterium, a rare type of hydrogen, present in the comet's water.
The comet had just half the amount of deuterium seen in comets.
The result, published in Nature, hints at the idea that much of the Earth's water could have initially came from cometary impacts.
Just a few million years after its formation, the early Earth was rocky and dry; something must have brought the water that covers most of the planet today.
Water has something of a molecular fingerprint in the amount of deuterium it contains, and only about a half-dozen comets have been measured in this way.
All of them have exhibited a deuterium fraction twice as high as the oceans, so the current theory holds that asteroids were likely to be the carriers for water; meteorites that they give rise to have roughly the same proportion of deuterium that the Earth's oceans contain.
(Excerpt) Read more at bbc.co.uk ...
Comet tale ping.
3 And God said, Let there be light, and there was light. 4 God saw that the light was good, and he separated the light from the darkness. 5 God called the light day, and the darkness he called night. And there was evening, and there was morningthe first day.
6 And God said, Let there be a vault between the waters to separate water from water. 7 So God made the vault and separated the water under the vault from the water above it. And it was so. 8 God called the vault sky. And there was evening, and there was morningthe second day.
9 And God said, Let the water under the sky be gathered to one place, and let dry ground appear. And it was so. 10 God called the dry ground land, and the gathered waters he called seas. And God saw that it was good.
Looks like this weighs in favor of that theory.
It’s salty, has fish, plankton, sharks swimming it.
to add to what aruanan linked there:
:’) Deuterium is indeed an isotope of hydrogen. Heavy water is Deuterium monoxide.
|GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach|
Lou Frank has been attacked for twenty years on this subject.
“The result, published in Nature, hints at the idea that much of the Earth’s water could have initially came from cometary impacts. “
or maybe the other way around :)
Makes sense I guess. Deuterium is just the most commonly used term for heavy water despite the inaccuracy.
Makes sense I guess.
Sure, Deuterium = heavy water = cold fusion.
Comets are driven by cold fusion.
Now why didn’t I think of that.
Oh yeah, I just did.
And who says conservatives don’t do science. LOL
“Yikes, who writes this stuff. ...”
It’s strangely worded, but correct. Deuterium is an isotope of Hydrogen. The abundant form of hydrogen has just a proton in the nucleus. Deuterium has a neutron and a proton. That’s why it’s “heavy”.
Sharks with laser beams.
Oh, and it the lost city of atlantis is there at the bottom, too.
I recall many years ago being confused in trying to find out what deuterium is. I'd read different things.
How much water is in a comet compared to that in the earth’s oceans? Is it plausible that a strike on the earth by a large dry rock could cause ocean water to splash out into outer space, in such a way that it would enter a highly elliptical orbit about the sun and become a comet?
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