McKay and colleagues take the holistic approach: that the simplest explanation The data are inadequate to confirm the finding beyond any reasonable doubt. The data are intriguing, but like most controversial issues in science, Hydrocarbons (PAHs), that are formed by biological processes.Ī more complete discussion of the evidence is given high mass organic compounds called polycyclic aromatic.microscopic mineral grains like those sometimes found in. shapes in the rock that resemble fossil bacteria.None of which independently provides striong evidence, but which together The evidence consists of a number of separate items, Those of Mars (isotopic abundances are like fingerprints: each planet has a Martian origin, because their compositions and isotopic abundances match Up by an expedition looking for Antarctic meteorites in 1984. Years, and fell to Earth in Antarctica about 13,000 years ago. Meteorite impact about 16 million years ago. The meteorite was ejected from Mars during a ALH84001 is about 4.5 billion years old about 3.6īillion years ago water (or some other liquid) flowed through the rock,ĭepositing carbonate globules wherein was found the purported They announced that they may have found evidence of life in a In the Summer of 1996, David McKay and his co-workers Rock has found evidence for ancient life - maybe. Of Antarctica in 1984) is of Martian origin. The meteorite ALH84001 (so-named because it was found in the Allen Hills The Viking Landers undertook three biochemical tests, with inconclusiveīut any life is likely to be buried down where the subsurface water is. There is no macroscopic life on Mars today. Our brains are hard-wired to look for recognizable patterns. It is a weathered mesa.Īnother view of the Face on Mars, with different lighting conditions, The Face on Mars - images with better resolution. The Face on Mars - from the Viking orbiters in 1976. The amount of water would cover the planet to a Radar mapping by the Mars Express shows H 2O ice under the The Surface Spirit and Opportunity on Mars Olympus Mons: the biggest volcano in the Solar System.Įlysium Mons and Albor Tholus, in the Tharsis ridge. Spacecraft flew within 4000 km of Mars in 1969. The brain is notĭreams Smashed Mars approached by Mariner 7 in 1969 Water canals, it is a red planet with dark grey regions. Mars is not a red planet with green vegetation outlining The second illusion is that dark grey, when viewed next to red,Īppears green. Human brain tends to connect the dots, which results in apparent linearįeatures. When these dots are blurred as seen through a telescope, the That the brain, when confronted by a disordered pattern of dots, attempts to We now know that this mythos arose from two optical illusions. (dark regions at the intersections of the canali. To collect the melting polar ice, and to distribute the water among the oases Up a mythos of Mars as a dying planet, whose intelligent denizens built canals Mars Hill in Flagstaff, AZ, mistranslated this as canals.Ĭanals imply intelligent life, and deliberate construction. The tern canali is Italian it translates most directly as He identified canali, dark linear features on the surface. Schiaparelli published drawings of Mars as seen through his Mottled with dark, apparently green (the color of vegetation), regions, Its white polar caps waxed and waned with the seasons. Telescopic observations showed that Mars was a dynamic place. It is red - the color ofīlood - which may explain its association with war gods in many cultures. Has always held a fascination for mankind. Who rescues princesses, fights the monsters, and pacifies the This is classic science fiction featuring the valiant Earthman, John Carter,
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