Life on Earth may have had an Earlier Start than believed--implications for Life in Space

Message boards : SETI@home Science : Life on Earth may have had an Earlier Start than believed--implications for Life in Space
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Michael Watson

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Message 1852210 - Posted: 1 Mar 2017, 22:47:17 UTC
Last modified: 1 Mar 2017, 22:57:00 UTC

It's being reported that fossil evidence has been found for simple organisms, perhaps as old as 4.28 billion years. If this finding can be confirmed, it means that life managed to establish itself on our planet when it was just 320 million years old. That's very early in the history of our planet, compared to its age of 4 .6 billion years.

If life started so readily, and so early on this planet, it seems to bode well for the existence of life elsewhere in space. Any life present would have had to begin among, and cope with, conditions very different from those experienced today. Even the Sun would have been considerably weaker at that time.

It had formerly been believed that life on Earth began about 3.480 billion years ago.

Link, below, to article, with photographs, with further details on this discovery:

http://www.bbc.com/news/science-environment-39117523
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Michael Watson

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Message 1852343 - Posted: 2 Mar 2017, 17:15:04 UTC
Last modified: 2 Mar 2017, 17:24:24 UTC

Another article on the supposed ancient fossils. This one is from a scientific publication. The tone is generally accepting of the validity of the find. It also brings out the potential relevance to extraterrestrial life.

https://phys.org/news/2017-03-world-oldest-fossils-unearthed.html
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Message 1852787 - Posted: 4 Mar 2017, 10:04:35 UTC - in response to Message 1852343.  

Many people believe that the moon was created by the collision of an asteroid with earth. That in turn left matter from outer space that generated life on earth.
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Message 1852804 - Posted: 4 Mar 2017, 11:51:37 UTC

On the magazine of Touring Club Italiano there is an article about Australia which says that Ayers Rock could be what remains of a meteorite which struck Earth. The aboriginal Australians believe it is a sacred rock and don't want tourists to climb it.
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Message 1852894 - Posted: 4 Mar 2017, 16:51:06 UTC - in response to Message 1852343.  

Another article on the supposed ancient fossils. This one is from a scientific publication. The tone is generally accepting of the validity of the find. It also brings out the potential relevance to extraterrestrial life.

https://phys.org/news/2017-03-world-oldest-fossils-unearthed.html

Had a read of your links last night. Very interesting. Thank you for highlighting them for us.
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Message boards : SETI@home Science : Life on Earth may have had an Earlier Start than believed--implications for Life in Space


 
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