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PhDreamer
SFN Regular
USA
925 Posts |
 Posted - 08/27/2001 : 09:45:24 [Permalink]
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Unbelievable! Von Daniken actually has a picture of the Paluxy River tracks on his website with at attendant ludicrous caption! It's the at the very bottom of the picture page. Past all the shameless promotion of himself at those fascinating sites, displayed prominently at the top.
This signature does not exist. |
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Mespo_man
Skeptic Friend
USA
312 Posts |
Posted - 08/27/2001 : 10:52:39 [Permalink]
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quote:
And although such extraterrestrial plants would likely have stems and leaves, there would likely be lots of differences, such as different photosynthetic pigments. This may cause them to be some color different from Earth-plant green.
But no such vegetation has ever been discovered. [Ipetrich]
Would photosyntehsis be required of an extra-terrestial plant? What about the whole world of more primitive molds, fungi and other non-vascular plants. A subterranean existence would preclude the need to reach for the sun and expose oneself to early detection.
Great post, BTW. I'm learning alot.
(:raig |
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lpetrich
Skeptic Friend
USA
74 Posts |
Posted - 08/28/2001 : 01:00:23 [Permalink]
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In answer to Mespo_man's question, one has to ask what inorganic energy sources would be available for an organism. On Earth, there are some organisms that use such inorganic sources, which are all chemical reactions of various sorts, such as
carbon dioxide + hydrogen -> water + methane
or
sulfuric acid + hydrogen -> water + hydrogen sulfide
However, there is not much opportunity to subsist on such chemical reactions, because most of the Earth does not have such conveniently reactive mixtures. And what holds true of Earth life would hold true of extraterrestrial life as well.
So it is reasonable to expect extraterrestrial life to include photosynthesizers.
As to fungi and the like; they live off of the decaying remains of other organisms -- in fact, these sort of organisms are what perform the decay. So they would not count as primary producers.
Edited by - lpetrich on 08/28/2001 01:26:16 |
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ljbrs
SFN Regular
USA
842 Posts |
Posted - 09/01/2001 : 13:07:34 [Permalink]
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lpetrich:
Your comments cannot be improved upon. Wonderful! Do not tire of writing them. Some of us love to read them.
ljbrs
Perfection Is a State of Growth... |
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Chippewa
SFN Regular
USA
1496 Posts |
Posted - 10/01/2001 : 23:45:23 [Permalink]
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quote:
I got into it with a guy on another board about this. He could not conceive that the Ancient Egyptians could have built all their monuments without extraterrestrial help. Forget trial and error; forget a lot of stuff fell down due to faulty design. He also didn't take into consideration that if you throw enough money, people, and resources at a project, you could accomplish some pretty incredible feats.
Lisa
Yes. Archeologists now know that the ancient Egyptians made a lot of mistakes with the earlier pyramids (one even collapsed and was abandoned.) The so-called "bent pyramid" changes angle when they realized why the earlier one collapsed. Don't get me wrong, they are marvelous structures, and must have been glorious when they were new and covered with polished smooth stone and crowned with a gold cap. But it was a long hard rode to the Cheops pyramid. So much for alien magic! How about human sweat?
Chip
P.S. Here I am responding to an August post in October. Obviously no aliens are guiding me either! (-;
"I'd never join an organization that would have a man like me as a member." |
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