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Water in the Earth's oceans may have come from comets

Old 12-Oct-2011, 09:31 AM
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Water in the Earth's oceans may have come from comets

Using a powerful space telescope, scientists have found evidence that the water in the Earth's oceans could have been delivered by comets.

During observations made with the Herschel Space Telescope last year, astronomers found water ice on a comet called Hartley 2. Water has been found on six other comets, but its molecular composition - specifically, its deuterium-to-hydrogen ratio - made them unlikely as a source of Earth's water. Most scientists have assumed that water arrived on this planet by way of asteroid impacts.

But the ice on Hartley 2 is composed of water that matches the chemistry of the Earth's oceans. The handful of water-bearing comets previously discovered, the researchers believe, came from the Oort cloud, a band of comets about a light-year away from the sun.

Hartley 2 probably came from the Kuiper belt, 1,000 times closer to Earth. This could explain the very different composition of its water ice.

Read more: http://economictimes.indiatimes.com/...w/10325090.cms
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Old 13-Oct-2011, 06:11 PM
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If these scientists would read Genesis 1, they wouldn't have to spend billions on equipment to try and guess where the water on earth came from. :P
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Old 14-Oct-2011, 04:49 PM
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True, but they look at that account as theory and their account is....hey, wait a minute. LOL
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Old 16-Oct-2011, 12:47 AM
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I prefer to believe the account of the person who was there, rather than the speculation of people who weren't there.

Interesting article none-the-less. Always cool to see what they find out in space.
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Old 19-Oct-2011, 03:36 PM
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scientists kill me

one day they say this...the next they disprove themselves, and the cycle just goes on and one...searching for an answer they'll never get because they're searching for the wrong one.
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Old 19-Oct-2011, 09:36 PM
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^Yep.

It's surprising how much of "science" is actually very illogical.
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