Note: this topic is from 9/02/2011. Thanks Red Badger.
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Posted on 09/02/2011 6:39:49 AM PDT by Red Badger
They saying the sun was cooler at the time.
It’s amazing that The GW crowd never hard about the sun getting hotter.
They saying the sun was cooler at the time.
It’s amazing that The GW crowd never hard about the sun getting hotter.
Time to start that stillsuit factory
They look like seashells to me:
Years ago I met the NASA scientists who wrote the paper on the Allen Hills meteorite. That rock had the isotopic signature of Mars and the bacteria fossils were almost exactly like certain bacteria on Earth. More evidence that Mars probably still has at least microbes in hot springs. There are extremophiles on Earth that would do just fine in an acid Martian hot spring.
I also offer bets on Europa. We might even find fish under the ice.
“as recently as 1 billion years ago”
Oh, it was that recent, eh? We just missed it :P
Physorg.com....it reads like a Marvel Comic Book writer. Let’s pretend...make up some stuff and pretend it could represent science.
You missed a vital step.
First, you make some stuff up.
Then, you make a COMPUTER MODEL of the stuff you just made up.
Finally, you can pretend it is science!
“Time to start that stillsuit factory.”
Here’s the power source:
http://www.technologyreview.com/energy/38469/?mod=chfeatured
I always wonder how anyone can determine what the necessary parameters would be for life to exist on another planet. Our sample size of habitable planets is 1. That’s hardly a sufficient sample size from which to make any generalizations about what is necessary for life to exist.
Even though our sample size of planet is ‘1’, our sample size of habitats is huge. From freezing mountaintops to the bottom of the oceans in darkness and humongous pressures and temps that would boil a lobster, we have found ‘life’ in many forms that would make space aliens look tame..............
I realize that this one example has a range within which life on this example survives. But there is a much wider range of possibilities than we have seen, and this is still only one example.
What the scientists in the article are doing is assuming that life must have the exact same composition it has on Earth, and must exist under the relative same conditions, then trying to estimate how many planets would be able to support life in the only form we know. But we do not know, nor can we, if life can only exist if it is composed of the same lipids, sugars, proteins, and nucleic acids that Earth life is composed of.
And that is what I mean by a small sample size.
If we actually begin to find planets with life on them, and we find that the biochemistry of all life is similar to Earth biochemistry, then we can start to make generalities about what form life must take, or what habitable conditions must be. But, until then, we cannot really predict where life might be found.
They seem to be forgetting an important step. How do you get all that oxygen into the atmosphere ? It required a whole lot of biological life on Aqua Planet Earth to get all that CO2 converted into O. And those biological processes required a whole lot of water.
Note: this topic is from 9/02/2011. Thanks Red Badger.
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