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The shadow of the tower is very dark and correct
Originally posted by Apass
(bold mine)
Exact. And that's prior knowledge needed to interpret the picture. Without some prior knowledge your brain can play tricks on you. Like saying an asteroid is a potato.
My brain wants me to go to the mountains or biking or dream of electric sheap (thanks to Ph. K. Dick) or see happy faces in the clouds or gazing at stars (through a telescope).
And I do pretty much all of that. But also, my brain wants me to believe that these lines are not straight and parallel.
So because of that, if I want to understand an image, I want to know all that is available on that image. And everybody should do that when presenting such images as evidence.
Yes, but this is NOT my job. It is not me who is presenting these images as evidence. It is you.
Originally posted by sardion2000
When dealing with another planet, there are no simple proofs, infact there are none, only evidence for and against.
The evidence suggests that there may have been life on mars at some point and may still be thriving in some places under the desert.
The Methane emissions alone are not confirmation, neither are the Ammonia emissions as well(they can be produced by totally chemical processes though the potential mechanism at work is a mystery to me).
At the same meeting, NASA's Planetary Protection Officer, John Rummel, described the alternative explanations: "methane in the atmosphere...is a detection from the planetary Fourier spectrometer. ESA, the European Space Agency, has put out an announcement that it's been detected at 10 to 20 parts per billion. Well, methane in the atmosphere on Mars can mean one of three things: either vulcanism, possibly microbial life, or maybe cows. We haven't seen the cows yet. I doubt that we'll find them. But one of the other two would be a very interesting thing to find out."
www.astrobio.net...
Methane has been found in the Martian atmosphere which scientists say could be a sign that life exists today on Mars.
It was detected by telescopes on Earth and has recently been confirmed by instruments onboard the European Space Agency's orbiting Mars Express craft.
Methane lives for a short time in the Martian atmosphere so it must be being constantly replenished.
There are two possible sources: either active volcanoes, none of which have been found yet on Mars, or microbes.
news.bbc.co.uk...
What is important now, Foing added, is to identify what niches life on Mars could have retreated to and then survived within for the last three billion years.
Mars Express has found levels of methane in the planet’s atmosphere. These measurements are puzzling, Foing said, and could be interpreted as the possible signature of life on Mars today.
"We did not expect to have it," he said, "so it’s a discovery."
Another cause of the methane could be from the presence of active volcanism. Indeed, Mars Express is prodding scientists to consider currently active volcanism in terms of thermal vents that could serve as comfy niches for potential ecosystems.
"Because Mars has a large variety of potential habitats for life, there is need for follow-up measurement to better understand Mars globally and also locally," Foing said.
seattletimes.nwsource.com...
Krasnopolsky, standing by his methane detection, says winds should spread the trace amounts of methane around too. He believes the methane he detected is produced by bacteria that live in "oases" where liquid water can exist - however briefly - on the Martian surface, due to heating by sunlight or by a hydrothermal source.
He argues that a non-biological source of methane is unlikely because crater-counting methods suggest no surface lava on Mars is younger than 10 million years old.
But he will not rule out the possibility that underground bubbles of methane from ancient volcanism might somehow be brought to the surface to replenish the atmosphere.
www.newscientist.com...
Either it was released during volcanic or geological activity, or was created recently by living microbes.
A third option - that it was produced by some unknown chemical reaction - is possible, but unlikely, they say.
Prof Colin Pillinger, the Open University space scientist behind the Beagle 2 lander, said: "This may not say that there's life on Mars, but it doesn't half get close. Whether it is produced by organisms now or from volcanic activity, the primary source of methane is microbes.
"Most of the natural methane gas released during geological activity on the Earth originally comes from the decomposition of organic matter.
"On a planet like Mars, methane doesn't hang around so you have to find a way of constantly replenishing it. It is very difficult to produce except from a biological source."
www.telegraph.co.uk.../news/2004/03/30/wmars30.xml&sSheet=/news/2004/03/30/ixworld.html
This is a historic moment for Mars exploration when a previously neglected region reveals its secrets," Jan-Peter Muller of the University College London said in a statement today. "Speculations that this area might have water close to the surface have been shown to be correct."
The findings could be important for biology, Muller and his colleagues say.
"Higher levels of methane over the same area mean that primitive micro-organisms might survive on Mars today," the statement reads.
www.space.com...
A University of Michigan scientist is part of a European Space Agency team that has detected methane gas on Mars, the clearest indicator yet that there could be life there, said Sushil Atreya, professor and director of the Planetary Science Laboratory in the College of Engineering.
"Biologically produced methane is one of many possibilities," Atreya said. "Methane is a potential biomarker, if a planet has methane we begin to think of the possibility of life on the planet. On Earth, methane is almost entirely derived from biological sources."
Mars resembles Earth more than any other planet in our solar system, and studying its atmosphere gives us a greater understanding of our own.
www.spacedaily.com...
Such biosynthesis leaves a ubiquitous signature of life even in specimens where there are no fossils visible.
Because researchers believe that methane can persist in the Martian atmosphere for less than 300 years, any methane they find can be assumed to arise from recent biological processes, produced, for example, by methane-producing bacteria. This close link gives methne its less scientific name of swamp gas.
The European Mars Express mission is capable of detecting methane in the martian atmosphere. As Agustin Chicarro, Mars Express Project Scientist said, these "investigations will provide clues as to why the north of the planet is so smooth and the south so rugged, how the Tharsis and Elysium mounds were lifted up and whether active volcanoes exist on Mars today."
www.spacedaily.com...
In scientific terms, the methane line detected is "very strong indeed," Mumma noted. Using the high-tech infrared spectrometers, spectra of six narrow longitudinal bands across the face of Mars were taken. Such spectra involve analyses of light broken into its rainbow of colors.
"Every one of these longitudes shows a very substantial enhancement in the equatorial zone," Mumma explained. "So this is a very intense source of methane on Mars in this region. It also requires a very rapid decay of methane … more rapid than photochemistry would allow."
On Mars, the photochemical lifetime of methane is very short — roughly 300 years. Therefore, any methane now lingering within the Martian atmosphere must have been released recently.
www.msnbc.msn.com...
If we should find life on Mars, Europa or Titan, it would be the greatest discovery evar!
Phisophers and Theologins will be working overtime to work that into their worldviews.
But most importantly, it will give us a chance to compare life on Earth with that of another planet. What can that teach us? Well for one thing we can see how different the two are.
If they are extremely similiar to earth bacteria that would be a bad thing because then people will be claiming cross-contamination.
If we find a lifeform with a triple or quadruple helix structure, then it's quite obvious that it isn't from this earth(same goes for a Silcon based lifeform too).
Originally posted by sardion2000
What the hell do General Relativity and Newtons "laws" have to do with Life on Mars?
Oh, another thing. There are no proofs(simple or otherwise) in Science. There are proofs in Math.
There is only evidence(for and against) and falsifiable theories(ei Theory that can be proven false, no theory can ever be Proven 100% correct, its not how science works)
Normally I'd tell someone to read up more on science, but I know how much you disdain textbooks.