Evaluating the biological potential in samples returned from planetary satellites and small solar system bodies : framework for decision making / / Task Group on Sample Return from Small Solar System Bodies, Space Studies Board, Commission on Physical Sciences Mathematics and Applications, National Research Council

• Pubblicazione: Washington, D.C., : National Academy Press, 1998
• Edizione: 1st ed.
• Descrizione fisica: 1 online resource (116 p.)
• Disciplina: 576.8/39
• Soggetto topico: Planetary quarantine; Exobiology; Space microbiology
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Includes bibliographical references.
• Nota di contenuto: Evaluating the Biological Potential in Samples Returned from Planetary Satellites and Small Solar Sy... -- Copyright -- Foreword -- Preface -- Acknowledgment of Reviewers -- Contents -- Executive Summary -- STUDY APPROACH -- FINDINGS -- Planetary Satellites -- Asteroids -- Comets -- Cosmic Dust -- CONCLUSIONS AND RECOMMENDATIONS -- Containment of Returned Samples -- Handling of Returned Samples -- Scientific Investigations to Reduce Uncertainty -- REFERENCES -- 1 Introduction -- SCOPE AND APPROACH OF THIS STUDY -- CURRENT UNDERSTANDING OF ORIGINS, CONTINUANCE, AND SURVIVAL OF TERRESTRIALLIFE FORMS-A SYNOPSIS -- Early Earth as a Model for the Origins of Self-replicating Life Forms -- Viability of Microorganisms -- Factors That Influence the Survival of Metabolically Active Cells -- Factors That Affect the Survival of Dormant Microorganisms -- QUESTIONS APPROPRIATE FOR ASSESSING THE BIOLOGICAL POTENTIAL OF SMALL BODIES -- CONTENT AND ORGANIZATION OF THIS REPORT -- REFERENCES -- 2 Natural Influx and Cross-Contamination -- NATURAL INFLUX TO EARTH -- PROCESSES OF DELIVERY FROM DIVERSE PARENT BODIES -- CROSS-CONTAMINATION -- SUMMARY -- REFERENCES -- 3 Planetary Satellites Inside Jupiter's Orbit -- ORIGIN, COMPOSITION, AND ENVIRONMENTAL CONDITIONS OF SATELLITES EXAMINED -- The Moon -- The Satellites of Mars -- The Galilean Satellites of Jupiter -- Io -- Europa -- Ganymede -- Callisto -- POTENTIAL FOR A LIVING ENTITY TO BE IN OR ON SAMPLES RETURNED FROMPLANETARY SATELLITES -- SCIENTIFIC INVESTIGATIONS TO REDUCE THE UNCERTAINTY IN THE ASSESSMENTOF PLANETARY SATELLITES -- Phobos and Deimos -- Europa -- Ganymede -- Callisto -- SUMMARY -- REFERENCES -- 4 Asteroids and Meteorites -- UNDIFFERENTIATED, PRIMITIVE (C-TYPE) ASTEROIDS -- UNDIFFERENTIATED, METAMORPHOSED ASTEROIDS -- DIFFERENTIATED ASTEROIDS. ; POTENTIAL FOR A LIVING ENTITY TO BE IN OR ON SAMPLES RETURNED FROMASTEROIDS -- SCIENTIFIC INVESTIGATIONS TO REDUCE THE UNCERTAINTY IN THE ASSESSMENTOF ASTEROIDS -- SUMMARY -- REFERENCES -- 5 Comets -- ORIGIN -- Place of Formation -- Nebular Processes and Accretion -- Gravitational Scattering -- Early Heating and Melting -- COMPOSITION -- Physical Characteristics -- Chemical Composition -- PAST AND PRESENT ENVIRONMENTAL CONDITIONS -- DELIVERY OF SAMPLES TO EARTH -- POTENTIAL FOR A LIVING ENTITY TO BE IN OR ON SAMPLES RETURNED FROMCOMETS -- SCIENTIFIC INVESTIGATIONS TO REDUCE THE UNCERTAINTY IN THE ASSESSMENTOF COMETS -- SUMMARY -- REFERENCES -- 6 Cosmic Dust -- NATURAL INFALL OF DUST TO EARTH -- POTENTIAL FOR A LIVING ENTITY TO BE IN OR ON RETURNED SAMPLES OFCOSMIC DUST -- SCIENTIFIC INVESTIGATIONS TO REDUCE THE UNCERTAINTY IN THE ASSESSMENTOF COSMIC DUST -- SUMMARY -- REFERENCES -- 7 Considering the Potential Risks from Returned Samples -- LIKELIHOOD OF FINDING AND INCLUDING A LIVING ORGANISM IN SAMPLESFROM DIFFERENT SOLAR SYSTEM BODIES -- ANTICIPATING THE PUTATIVE NATURE OF LIFE FROM SMALL SOLAR SYSTEMBODIES -- CONCERNS ABOUT POTENTIAL BIOHAZARDS AND ADVERSE EFFECTS -- CONTAINMENT AND QUARANTINE FACILITIES -- TESTING OF RETURNED SAMPLES -- SUMMARY -- REFERENCES -- 8 Conclusions and Recommendations -- ASSESSMENT OF POTENTIAL FOR A LIVING ENTITY TO BE PRESENT IN OR ONSAMPLES RETURNED FROM SMALL SOLAR... -- Planetary Satellites -- Moon -- Phobos and Deimos -- Io -- Europa -- Ganymede -- Callisto -- Asteroids -- Comets -- Cosmic Dust -- CONTAINMENT AND HANDLING OF RETURNED SAMPLES -- SCIENTIFIC INVESTIGATIONS TO REDUCE UNCERTAINTY -- REFERENCE -- Appendixes -- A Biographical Sketches of Task Group Members -- B Letter of Request -- C Additional Perspectives on Contamination from Space -- CLAY-BASED LIFE -- PANSPERMIA -- ARTIFACTS IN METEORITES. ; REFERENCES -- D Planetary Protection Policy-NASA and COSPAR -- NASA'S POLICY -- Cospar Policy -- REFERENCES -- E Glossary.
• Sommario/riassunto: For the first time since the Apollo program, NASA and space agencies abroad have plans to bring samples to Earth from elsewhere in the solar system. There are missions in various stages of definition to gather material over the next decade from Mars, an asteroid, comets, the satellites of Jupiter, and the interplanetary dust. Some of these targets, most especially Jupiter's satellites Europa and Ganymede, now appear to have the potential for harboring living organisms. This book considers the possibility that life may have originated or existed on a body from which a sample might be taken and the possibility that life still exists on the body either in active form or in a form that could be reactiviated. It also addresses the potential hazard to terrestrial ecosystems from extraterrestrial life if it exists in a returned sample. Released at the time of the Internationl Committee on Space Research General Assembly, the book has already established the basis for plans for small body sample retruns in the international space research community.
• Titolo autorizzato: Evaluating the biological potential in samples returned from planetary satellites and small solar system bodies
• ISBN: 9786610186907; 9780309173711; 030917371X; 9781280186905; 1280186909; 9780309592048; 0309592046; 9780585025421; 0585025428
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910957200103321
• Lo trovi qui: Univ. Federico II