The complete original press release of Dr. Gilbert V. Levin. Past life on Mars

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    PRESS RELEASE
    12051 Indian Creek Court
    Beltsville, MD 20705

    For additional information, contact
    Gilbert V. Levin, Ph.D., President
    Biospherics Incorporated
    (301) 419-3900

    July 30, 1997

    VIKING SCIENTIST CLAIMS DETECTION OF LIFE ON MARS
    Pathfinder Data and Pictures Said to be Consistent with Claims

    In a presented at the International Society for Optical Engineering in San Diego today, Viking life detection experimenter Dr. Gilbert V. Levin, President of Biospherics Incorporated, said he has now concluded that his experiment detected microbial life on Mars 21 years ago. Based on a re-evaluation of his and other Viking results coupled with new Martian and Earth relevant scientific data, Levin stated: "The only conclusion consistent with all the known facts is that the Viking Labeled Release Experiment discovered microorganisms in the soil of Mars." Levin also claimed that his paper, written before Pathfinder landed on Mars, is supported by images and data from that spacecraft.

    The paper presents the scientific findings supporting this new conclusion, which just appeared in a chapter written by Dr. Levin in the book, Mars: The Living Planet, by Barry DiGregorio, published this week (Frog, Ltd., Berkeley, California).

    Until now, Levin's strongest statement about his 1976 Viking Mission findings was that it was "more probable that not" that the Labeled Release (LR) Experiment had detected life on Mars. Even this inconclusive statement made 10 years ago still causes considerable controversy. NASA has contended that one or more chemicals in the Martian surface material had mimicked life in Levin's experiment. The majority of interested scientists agreed with this simpler explanation of Viking's most intriguing discovery. A number of reasons were cited to explain why life could not exist on Mars. Only a small minority of microbiologists and planetary scientists supported Levin's interpretation of the data. In today's presentation, Levin said that, over the years, and particularly very recently, the obstacles to the existence of life on Mars and the proposed chemical explanations of the LR results have fallen one by one.

    The strongest argument against life on Mars came from another Viking experiment, the Gas Chromatograph Mass-Spectrometer (GCMS). Designed to identify organic matter expected in the Martian surface material, the GCMS reported there was none. Since organic matter is the stuff of life, it was widely concluded that Mars was sterile. The GCMS barrier was removed by the exciting recent reports of organic matter and fossilized remains of microorganisms in meteorites believed to have come from Mars. When asked why the Viking GCMS had not found organic matter, a top NASA official explained that the instrument sent to Mars was not sensitive enough to detect the amount of organic matter in the meteorites.

    The chemical theories also suffered a major setback. Hydrogen peroxide, perhaps in combination with other chemicals in the Martian surface material, had been theorized to have produced false life signals when tested in the LR. Recently, NASA Goddard Space Flight Center scientists reported that highly sensitive Earth telescope experiments found no evidence of hydrogen peroxide on Mars. The finding capped years of unsuccessful attempts by many researchers to duplicate the Mars LR results through chemistry, including many varieties of peroxides.

    The reported lack of liquid water on the Martian surface was another "proof" that life could not exist on Mars. Water was said to occur on the surface only as ice, which, upon warming, immediately became vapor because of low atmospheric pressure. However, Levin presented Viking Orbiter and Lander data proving that liquid water does occur on the surface of the Red Planet. Viking data on temperature and atmospheric pressure at the Martian surface prove that water occurs in liquid form in the upper few millimeters of the soil. Thus, the dew-deposited ground frost shown each morning in the Viking images melts into liquid water as the temperature rises with the sun. The liquid would be available to microorganisms each day.

    Next, the concept that the environment of Mars was too harsh for life fell to a stream of discoveries of life on Earth in places long believed uninhabitable. Long thought to constitute merely a "thin film" around Earth, life is now known to inhabit the heights and depths of our planet. Microorganisms were found to have survived thousands of years in permafrost thousands of feet beneath the ground surface. Others were found living in cold and hot deserts inside rocks. Life was found at temperatures far above previously supposed limits; in sunless deep waters where the only source of energy is water and rock; and life forms never before known were found, requiring reconstruction of scientists' basic diagrams of evolution of the species. Microorganisms were reported to be recovered after millions of years in ultra-dry storage. Microbes have even been reported living in organic solvents devoid of liquid water. There is now ample evidence that life on Earth has survived environments far harsher than those at the Viking landing sites, including the gradual flooding of our atmosphere with the highly toxic gas, oxygen-which Earth life evolved to survive and utilize.

    Recent announcements concerning the Martian meteorites have revived the whole issue of life on Mars. Meteorite EETA79001 is reported to contain evidence for life dating from only 600,000 years ago, a time well after any major change in the Martian environment. If life were on Mars only 600,000 years ago, most biologists would fully expect it to be there today. But the Martian meteorites do something even more important to provide credibility to Levin's claim. They remove the ultimate barrier to accepting the evidence for life on Mars. This is the requirement for a separate origin of life, a process far more complex, and, therefore more unbelievable, than any chemical scenario, even though the latter remains to be demonstrated. The meteorites support the "Panspermia" theory proposed by the 19th century Swedish Nobel Laureate, Svente Arrhenius, who said that life travels through space, landing on planets and infecting those with receptive conditions. Levin points out that, even if the meteorites containing biological evidence are not from Mars, they will still have proved that microbial life travels between planets. Once material is dislodged from a planet by meteor impact, any microorganisms in it would be preserved by the cold vacuum of space, the conditions used in laboratories to preserve microorganisms in dormancy for long periods. Such microorganisms can then be fully resuscitated by placing them in a favorable environment again, such as might occur upon impacting another planet.





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    Past life on Mars:
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    The complete original press release of Dr. Gilbert V. Levin