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New View of early Earth

by Dave Konkel [Moderator] / November 19, 2005 7:32 AM PST
New View of Early Earth: A Habitable Place (for microbes!).

>> A new study concludes Earth had continents and oceans 4.3 billion years ago, which is just a geological eyeblink after the planet is thought to have formed, in the wake of the Sun's birth 4.6 billion years ago.

A separate study reported in May came to a similar conclusion, also suggesting that notions of a fiery, hellish planet back then have been overblown.

Here's why it matters: A world with water and land and somewhat moderate temperatures and volcanic conditions would have been habitable. That does not mean there was life, but the conditions were in place. <<
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Any chance that at that time
by duckman / November 19, 2005 7:58 AM PST

the mean temperature was warmer or colder than today ?

"The air would have been an unbreathable mix of carbon dioxide, water vapor, sulfur gases and methane. Yet for many microbes, "

Hmmmm, all that without internal combustion engines

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(NT) (NT) Next you'll be telling me about global warming on Mars!
by Evie / November 19, 2005 10:21 AM PST
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(NT) (NT) Polar ice caps are melting there
by duckman / November 19, 2005 10:25 AM PST
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(NT) (NT) Fascinating. Thanks.
by Dan McC / November 21, 2005 1:51 AM PST
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Id be curious to know the evidence
by Dragon / November 21, 2005 4:33 AM PST

For water. I understand the continent part, given the short article I read.

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