G
Gilbert V. Levin
Researcher at Ames Research Center
Publications - 37
Citations - 967
Gilbert V. Levin is an academic researcher from Ames Research Center. The author has contributed to research in topics: Mars Exploration Program & Life on Mars. The author has an hindex of 13, co-authored 37 publications receiving 921 citations. Previous affiliations of Gilbert V. Levin include American Institute of Biological Sciences.
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Recent results from the Viking Labeled Release experiment on Mars
TL;DR: The Labeled Release (LR) life detection experiment seeks detection of heterotrophic metabolism by monitoring radio-active gas evolution following the addition of a radioactive nutrient containing seven C-14 labeled organic substrates to surface material.
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Viking labeled release biology experiment: interim results.
TL;DR: This report summarizes all results of the labeled release life detection experiment conducted on Mars prior to conjunction and concludes that available facts do not yet permit a conclusion regarding the existence of life on Mars.
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The Viking Biological Investigation: Preliminary Results
Harold P. Klein,Norman H. Horowitz,Gilbert V. Levin,Vance I. Oyama,Joshua Lederberg,Alexander Rich,Jerry S. Hubbard,George L. Hobby,Patricia Ann Straat,B. J. Berdahl,Glenn C. Carle,Frederick S. Brown,Richard D. Johnson +12 more
TL;DR: Three different types of biological experiments on samples of martian surface material ("soil") were conducted inside the Viking lander, and results so far do not allow a decision regarding the existence of life on the plonet Mars.
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A search for a nonbiological explanation of the Viking Labeled Release life detection experiment
TL;DR: The presence of a biological agent on Mars must still be considered as discussed by the authors, especially when viewed against the harsh environment on Mars, requires careful consideration of possible nonbiological reactions that may have produced false positive results.
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Labeled release - an experiment in radiorespirometry.
TL;DR: The Labeled Release extraterrestrial life detection experiment onboard the Viking spacecraft is described as it will be implemented on the surface of Mars in 1976 to detect heterotrophic life by supplying a dilute solution of radioactive organic substrates to a sample of Martian soil and monitoring for evolution of radioactive gas.