1. Ames Exobiology The exobiology Branch conducts research in exobiology seeking to increase our knowledge of the origin, evolution, and distribution of life in the universe. http://exobiology.nasa.gov/

The nasa.gov site requires that JavaScripts be enabled in your browser. For instructions, click here Exobiology Defined Branch Members The Exobiology Branch conducts research in Exobiology seeking to increase our knowledge of the origin, evolution, and distribution of life in the universe. Answers are sought to questions such as: To what extent did chemical evolution occur in the primitive bodies of the solar system? How did life originate on the Earth, and what role did minerals play? What evidence exists regarding the early interplay between biological and environmental evolution? What do molecular fossils tell us about early microbial evolution? How can the study of contemporary microbes or geochemical samples inform us of past events? The work of the staff in this Branch also provides the conceptual basis and measurement criteria for future spacecraft missions to other solar system bodies such as Mars, Titan, and comets, in search of answers to such fundamental questions in non-terrestrial settings. Selected Research Groups Lipid Biomarker Laboratory Astrobiology Microbial Culture Facility Microbial Ecology/ Biogeochemistry Research Laboratory ... Astrobioinformatics Program Go to:

2. Introduction To Exobiology Explores the field of exobiology from a lay perspective including a selftest. Part of the Cruising Chemistry project at Duke. http://www.chem.duke.edu/~jds/cruise_chem/Exobiology/

Introduction to Exobiology You're driving in your car down dark road late one night with your friends. All of a sudden, you see a large circular object with blue lights spinning right in front of your car. A bright spotlight shines down on your car for ten seconds, and then leaves. As the object disappears before your eyes, you are left in amazement, wondering what just happened. Was that really a UFO? Is there really intelligent life out there in the universe? You turn around to ask your friends, only to find that one of them is missingÉ Sound a little farfetched? OK. How about something a little more down to Earth. You just got back from a two week vacation in Hawaii with your family. You walk into your room, throw down your suitcase, and sit on your bed. You glance over at the lamp on the table next to your bed. Reaching over to turn on the lamp, you notice a rather unpleasant smell. Looking down, there is a half full glass of what once might have been juice, but now is a nice bluish-green color with fuzz all around the edges. Yuck! Where did that come from? Scientists have been asking these same questions for a long time now. Come explore the field of exobiology, the search for the origin of life on the Earth, and in the Universe.

3. Exobiology | The Astrobiology Web | Your Online Guide To The Living Universe The exobiology Branch at NASA ARC The exobiology Branch conducts research in exobiology seeking to increase our knowledge of the origin, evolution, http://www.astrobiology.com/exobiology.html

Astrobiology Web SpaceRef - Sections Directory Focus On News Calendar Astrobiology All of Space Last Update Contact Us News Tracker News in your Palm Second Astrobiology Science Conference 7-11 April 2002 NASA Ames Research Center First Astrobiology Science Conference 3-5 April 2000 NASA Ames Research Center The Astrobiology Web: Your Online Guide to the Living Universe TM Exobiology Publications and References Exopaleontology Government Resources Organizations and Foundations ... Books we recommend Publications, Newsgroups, and References Geochimica et Cosmochimica Acta This is the journal of The Geochemical Society and The Meteoritical Society. This journal publishes research papers in a wide range of subjects in terrestrial geochemistry, meteoritics, and planetary geochemistry. Earth and Planetary Science Letters This journal covers research into all aspects of lunar studies, plate tectonics, ocean floor spreading, and continental drift, as well as basic studies of the physical, chemical and mechanical properties of the Earth's crust and mantle, the atmosphere and the hydrosphere. Advances in Space Research This page contains the index of books published in this series which cover all aspects of space research.

4. EXOBIOLOGY: An Interview With Stanley L. Miller The experiment yielded organic compounds including amino acids, the building blocks of life, and catapulted a field of study known as exobiology into the http://www.accessexcellence.org/WN/NM/miller.html

-Advertisement- Image credits From Primordial Soup to the Prebiotic Beach An interview with exobiology pioneer, Dr. Stanley L. Miller , University of California San Diego By Sean Henahan, Access Excellence Join the exobiology discussion 1n 1953, a University of Chicago graduate student named Stanley Miller working in Harold Urey's lab flipped a switch sending electric current through a chamber containing a combination of methane, ammonia, hydrogen and water. The experiment yielded organic compounds including amino acids, the building blocks of life, and catapulted a field of study known as exobiology into the headlines. Since that time a new understanding of the workings of RNA and DNA, have increased the scope of the subject. Moreover, the discovery of prebiotic conditions on other planets and the announcement of a bacterial fossil originating on Mars has brought new attention to the study of life's origins. I spoke with Dr. Miller in his lab at UCSD about the field he has helped to make famous, exobiology. Let start with the basics. Can you give a simple definition of exobiology?

5. Exobiology Is there life on other worlds? Astrobiology is a science that search the origin and evolution of the Universe and of the living beings on other planets out http://biocab.org/Exobiology.html

@import url(http://www.homestead.com/~media/elements/Text/font_styles.css); A BIT OF BIOPHYSICS Prior to my lecture on exobiology, we should review some biological concepts that are very important for the comprehension of the exobiology since the last century. I will start with the operational definition of life: From the viewpoint of Biophysics, life is a state of the energy in some quasi-stable systems determined by a series of intervals that delay the spontaneous dispersion of the internal energy of those quasi-stable systems toward more potential microstates An operational definition An operational definition is generally designed to model a conceptual definition , to be precise, by using words and concepts to describe a variable. Phase Space is the space at which all the possible states of a system are represented. The phase space is produced by the general positions and their corresponding conjugated moments. A conjugated moment derives from the difference between the kinetic energy and the potential energy in relation to an integral coordinate. Delaying is not the same as revert; although revert could cause a delay, it is not the behavior of processes or states in nature. Many authors say that life involves a violation of the second law of thermodynamics, or that it follows trajectories against entropy, which is not factual. The referred law indicates that the energy always flows from a space or system with a high density of energy toward another space or system with a lower density of energy, which is precisely how life occurs. The Universe has a higher density of energy than that of the biosystems. If it were not thus, then life would not be possible.

6. Exobiology - MSN Encarta exobiology, study of the origin, evolution and distribution of life in the universe. Exobiologists investigate how the formation of stars and http://encarta.msn.com/encyclopedia_761563487/Exobiology.html

var s_account="msnportalencarta"; MSN home Mail My MSN Sign in ... more Hotmail Messenger My MSN MSN Directory Air Tickets/Travel Autos City Guides Election 2008 ... More Additional Reference Materials Thesaurus Translations Multimedia Other Resources Education Resources Math Help Foreign Language Help Project Planner ... Help Related Items see also Life origin of life on Earth more... Encarta Search Search Encarta about Exobiology Also on Encarta Secret students What colleges really want Famous misquotes quiz Advertisement Exobiology Encyclopedia Article Find Print E-mail Blog It Multimedia 4 items Article Outline Introduction The Probability of Life in the Galaxy Looking for Life Beyond Our Solar System ... Prospects for Discovery I Introduction Print this section Exobiology , study of the origin, evolution and distribution of life in the universe. Exobiologists investigate how the formation of stars and solar systems led to the existence of planets suitable for life, how life originated on Earth and perhaps elsewhere, and which factors influenced biological evolution. The understanding of these events shape the study of how life arises and evolves in the universe. Earth is the only planet that we know harbors life. Exobiologists can use their knowledge about life on Earth to begin their search for life elsewhere. All known life on Earth is based on the element

7. Exobiology - Definition From The Merriam-Webster Online Dictionary Definition of exobiology from the MerriamWebster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. http://www.merriam-webster.com/dictionary/exobiology

Home Visit Our Sites Unabridged Dictionary Learner's Dictionary ... Contact Us Also Visit: Unabridged Encyclopedia Britannica Visual ESL: Learner's for Kids: Spell It! Word Central Dictionary Thesaurus Spanish/English Medical Search "exobiology" in: Thesaurus Spanish/English Medical Dictionary Open Dictionary Browse words next to: exobiology Browse the Dictionary: A B C D ... Z exobiology One entry found. exobiology Main Entry: Pronunciation: Function: noun Date:  a branch of biology concerned with the search for life outside the earth and with the effects of extraterrestrial environments on living organisms adjective noun Learn more about "exobiology" and related topics at Britannica.com See a map of "exobiology" in the Visual Thesaurus Pronunciation Symbols Products Premium Services ... Advertising Info

8. Exobiology - Memory Alpha, The Star Trek Wiki exobiology (also called astrobiology or xenobiology) is the biological science concerned with the study animals from other planets. http://memory-alpha.org/en/wiki/Exobiology

Exobiology From Memory Alpha, the free Star Trek reference. Jump to: navigation search Comparative xenobiological chart Exobiology (also called astrobiology or xenobiology ) is the biological science concerned with the study animals from other planets Time's Orphan ") Exobiology was also a course taught at Starfleet Academy TNG Encounter at Farpoint The Host A biologist who specializes in the field of exobiology is referred to as an exobiologist , xenobiologist, or astrobiologist. The sub-discipline known as comparative xenobiology is the scientific study of the physiological features of various alien lifeforms. (Refer to comparative xenobiological chart.) On Starbase 515 , an exobiology research division was located in room 03-1444. ( TNG Samaritan Snare edit Related topics Anatomy Exobiology Council Handbook of Exobiology Inter-species reproduction ... edit External link Exobiology at Wikipedia Retrieved from " http://memory-alpha.org/en/wiki/Exobiology Categories Starfleet Academy courses Biology Views Article Discussion edit this page History Personal tools Log in / create account Navigation Main page Recent changes Random page Help Community Forums Chat FAQ Policies ... Announcements Search Toolbox What links here Related changes Upload file Special pages ... Permanent link wikia Wikia Home Report a problem Live wiki help Wikia messages: ... Alexa toolbar - now available for Firefox!

9. Boggy's Links To Exobiology Back to Boggy s Geology Links Main Page. exobiology. Ad Astra Magazine Astrobiology EXPANDED Books about exobiology. Lectures in Astrobiology v. 1 http://www.geologylinks.com/exo.html

var m = "Page updated " + document.lastModified; var p = m.length-8; document.writeln(""); document.write(m.substring(p, 0)); document.writeln(""); Back to Boggy's Geology Links Main Page Exobiology Ad Astra Magazine Astrobiology EXPANDED EDITION January-February 1999 Cosmic Evolution Exobiology - An Interview with Stanley L. Miller Exobiology - NASA ... The UK Astrobiology Forum and Network Books about Exobiology Lectures in Astrobiology: v. 1 This book is the first comprehensive textbook at the graduate level encompassing all aspects that are associated with the emerging field of astrobiology. Volume I gathers a first set of extensive lectures that cover a broad range of topics, from the formation of solar system to the quest for the most primitive life forms that have emerged on the Early Earth. if you have any suggestion, comment, link to add, if you find unavailable link, mail to boggy

10. NSCORT/Exobiology The first three journals are devoted to Astrobiology and exobiology, while the remaining occasional carry articles of interest. This is especially true of http://exobio.ucsd.edu/exobiology.html

ORGANIZATIONS AND SOCIETIES: International Society for the Study of the Origin of Life http://www.issol.org/ The Planetary Society http://planetary.org/ http://www4.tpg.com.au/users/horsts/ (Planetary Society in Australia) The Astrobiology Society of Britain http://www.astrobiologysociety.org/ GOVERNMENTAL ASTROBIOLOGY SITES: http://www.nasa.gov/home/index.html http://www.astrobiology.arc.nasa.gov/ http://nai.arc.nasa.gov/ http://www.jpl.nasa.gov/ ... http://www.astrobio.net/ (NASA) http://www.esa.int/esaCP/index.html (European Space Agency) http://www.isro.org/ (Indian Space Research Organization) http://www.aao.gov.au/local/www/jab/astrobiology/ (Astrobiology Austalasia) http://www.nasda.go.jp/index_e.html (National Space Development Agency of Japan) http://www.cnsa.gov.cn/main_e.asp (Chinese National Space Administration) UNIVERSITY ASTROBIOLOGY PROGRAMS AND COURSES: http://astrobiology.asu.edu/ (Astrobiology at Arizona State University) http://aca.mq.edu.au/ (Australian Centre for Astrobiology) http://argyre.colorado.edu/life/index.html

11. Exobiology - Definition From Merriam-Webster's Medical Dictionary Definition of exobiology from MerriamWebster s Medical Dictionary with examples and pronunciations. http://medical.merriam-webster.com/medical/exobiology

Home Visit Our Sites Unabridged Dictionary Learner's Dictionary ... Contact Us Also Visit: Unabridged Encyclopedia Britannica Visual ESL: Learner's for Kids: Spell It! Word Central Dictionary Thesaurus Spanish/English Medical Search "exobiology" in: Dictionary Thesaurus Spanish/English Open Dictionary Browse words next to: exobiology Browse the Medical Dictionary: A B C D ... Z exobiology One entry found for exobiology Main Entry: exo·bi·ol·o·gy Pronunciation: -b -j Function: noun Inflected Form(s): plural -gies a branch of biology concerned with the search for life outside the earth and with the effects of extraterrestrial environments on living organisms called also astrobiology b l adjective Learn more about "exobiology" and related topics at Britannica.com See a map of "exobiology" in the Visual Thesaurus Pronunciation Symbols Products Premium Services ... Advertising Info

12. Astrobiology --  Britannica Online Encyclopedia also called exobiology or xenobiology a multidisciplinary field dealing with the nature exobiology is a branch of biology that deals with the search for http://www.britannica.com/eb/article-9033433/exobiology

var britAdCategory = "science"; Already a member? LOGIN Encyclopædia Britannica - the Online Encyclopedia Home Blog Advocacy Board ... Free Trial Britannica Online Content Related to this Topic This Article's Table of Contents astrobiology Print this Table of Contents Linked Articles extraterrestrial life life biology astronomy ... extraterrestrial intelligence Shopping New! Britannica Book of the Year The Ultimate Review of 2007. 2007 Britannica Encyclopedia Set (32-Volume Set) Revised, updated, and still unrivaled. New! Britannica 2008 Ultimate DVD/CD-ROM The world's premier software reference source. astrobiology Page 1 of 1 NASA/JPL/University of Arizona also called exobiology or xenobiology a multidisciplinary field dealing with the nature, existence, and search for extraterrestrial life life beyond Earth). Astrobiology encompasses areas of biology astronomy , and geology astrobiology... (75 of 693 words) To read the full article, activate your FREE Trial Close Enable free complete viewings of Britannica premium articles when linked from your website or blog-post. Now readers of your website, blog-post, or any other web content can enjoy full access to this article on astrobiology , or any Britannica premium article for free, even those readers without a premium membership. Just copy the HTML code fragment provided below to create the link and then paste it within your web content. For more details about this feature, visit our

13. Exobiology: Speculations On Alien Life And Intelligence An essay on the existence of alien life forms and galactic civilizations. http://jp.senescence.info/thoughts/exobiology.html

Home Thoughts Exobiology Of all mysteries of the universe, the possibility of meeting other intelligent species must be the most provocative. It would be the greatest achievement in the History of humankind to contact other intelligent species. Unfortunately, as I debate below, I don't know whether we would survive. Galactic Civilizations Geological time is in the order of millions of years. Life, which depends on the chemistry and conditions of a planet, also follows such large cosmological scales. Thus other intelligent species in the universe are not likely to be in the Bronze Age or in any age that happened to us in the last thousands of years. Possibly, if they are less intelligent than us, they would still be animals. But if we are to face a more advanced civilization they will be millions of years ahead of us because, by chance, they originated millions of years before. At a cosmological time scale, energy manipulation is a good method to classify a civilization. Nikolai Kardashev and Freeman Dyson developed the following classification for alien civilizations: Type Level of Energy Control I Absolute control over a planet's energy.

14. Astrobiology: The Living Universe - Exobiology Introduction What is exobiology? exobiology is the study of organisms that originate from outside of Earth. As yet, there has been no conclusive evidence of http://library.thinkquest.org/C003763/index.php?page=exobio01

15. Cnes - Exobiology Bioastronomy, astrobiology, exobiology Whatever you call it, it’s all the same—the study of the origins of life and in particular its evolution, http://www.cnes.fr/web/1752-exobiology.php

About CNES Space central to today's key social concerns Meeting society's needs Sustainable development ... Exobiology Exobiology Bioastronomy, astrobiology, exobiology Whatever you call it, it’s all the same—the study of the origins of life and in particular its evolution, its distribution across Earth and the universe, and the structures and processes involved. Scientific advances have enabled us to detect life in the most unexpected places. The existence of living organisms in some of Earth’s most extreme environments has led to serious consideration of their existence elsewhere in the universe. Since Earth is as yet the only planet where life is known to have developed in all its diversity, scientists use it as a starting point in their search throughout the solar system for signs of organic activity—the carbon-based elements capable of generating new life systems. Jargon Organic In biology, the term organic applies to anything involving organs, living tissues and—by extension—organized life forms. Organic chemistry, as opposed to mineral chemistry, deals with the study of compounds and in particular carbon compounds. What’s the connection? The basic building blocks of life, such as proteins and nucleic acids, consist of chains of elements based on carbon compounds.

16. Exobiology, Looking For Life In This Galaxy exobiology,astrobiology,biology,origins,mars,europa. http://www.execulink.com/~louisew/lifelinks.htm

Life in this Galaxy Looking for Evidence of Exobiology Active Exploration Missions June 2003 Mars Global Surveyor Mars Rovers Origins Program Cassini to Saturn ... Galileo to Jupiter BRAKING NEWS Check it out Water under Europa's surface ice Check it out Kepler Search for habitable Planets Check it out ESI Mars Express Check it out Mars Rover 2003 Check it out Mars Beagle2 Check it out Space Interferometer Check it out Stardust Exobiology Links Rare Earth: Interview with Peter Ward Astrobiology NASA Astrobiology.com Astrobiology Index ... Astrobiology ThinkQuest Team C003763 Exobiology Research Planetary Science Research Discoveries Home Page for Bell (1996) Geochemical Society paper Goldin Statement on New Galileo Europa Images Dr. Paul Braterman's Research The Solar System Mars Europa Planet Mars Titan ... The Nine Planets Water in the Solar System Water in Zag meteorite PSR Discoveries: Hot Idea: Ice on the Moon PSR Discoveries: Hot Idea: Mercury Unveiled Jupiter's Europa Harbours Possible "Warm Ice" or Liquid Water ... Titan Objectives Extra Solar Planets Extra solar Planets Encyclopaedia Darwin Home Page - space infrared interferometer - planet finding mission San Francisco State University Planet Search Project Evidence of Martian biology Evidence of bacteria magnetite crystals Life on Mars (FAS) Centre for Mars Exploration Home Page (AMES) Martian Exobiology Strategy Report ... Scientific American Mars Bugs Aug. 96

17. The Joshua Lederberg Papers: Launching A New Science: Exobiology And The Explora He collaborated with the wellknown astronomer Carl Sagan in establishing exobiology as a scientific discipline, and educated the public on the biological http://profiles.nlm.nih.gov/BB/Views/Exhibit/narrative/exobio.html

Skip navigation Home Collection Home Search ... About The Joshua Lederberg Papers Launching a New Science: Exobiology and the Exploration of Space Biographical Information The Development of Bacterial Genetics Transduction, Plasmids, and the Foundation of Biotechnology Launching a New Science: Exobiology and the Exploration of Space Computers, Artificial Intelligence, and Expert Systems in Biomedical Research Science and the Public Interest Documents Visuals Joshua Lederberg spent the fall of 1957 as Fulbright Visiting Professor of Bacteriology in the laboratory of virologist Sir Frank MacFarlane Burnet at the University of Melbourne, taking part in the research on antibody production that would earn Burnet a share of the Nobel Prize in 1960. From his vantage point in Australia, Lederberg witnessed the ascent of Sputnik on October 4, 1957, the first man-made satellite in earth orbit. The launch of Sputnik by the Soviet Union intensified the Cold War, but it also heralded the age of space flight and exploration, with its promise of revealing new secrets about the nature of the universe and the origins of life. The Andromeda Strain exobiology Washington Post during the 1960s.

18. Topic:Exobiology - Wikiversity The Center for exobiology is a Wikiversity content development project where participants create, organize and develop learning resources about the search http://en.wikiversity.org/wiki/Topic:Exobiology

Topic:Exobiology From Wikiversity Jump to: navigation search Welcome to the Wikiversity Center for Exobilogy, part of the School of Biology How common are the conditions required for life? Exobiology , also known as xenobiology or astrobiology is a speculative field within biology concerned with extraterrestrial life. The Center for Exobiology is a Wikiversity content development project where participants create, organize and develop learning resources about the search for life beyond Earth. Contents Where are the data? Possible data Learning resources References ... edit Where are the data? Terrestrial Planet Finder. Astrobiology is an idea in search of data. Many scientists expect that life is common, probably having come into existence on millions of planets. However, astrobiology is a speculative field within biology; nobody has evidence for extraterrestrial life. Astrobiology includes the concept of artificial life, since any life form with human-like intelligence could conceivably create artificial life in a laboratory. Such artificial life might be more suitable than a biological organism for interstellar travel. While currently funded efforts in astrobiology focus on planetary exploration and attempts to detect planets with Earth-like atmospheres, it has been suggested that we should also look closely at Earth for signs that alien artificial life is already here. edit Possible data Search for life on Mars Liquid water on Europa edit Learning resources The Drake Equation can human like intelligence evolve under water?

19. Exobiology: Free Encyclopedia Articles At Questia.com Online Library Research exobiology and other related topics by using the free encyclopedia at the Questia.com online library. http://www.questia.com/library/encyclopedia/101243446

Highlight the text above with the cursor. Use (ctrl + c) to copy and (ctrl + v) to paste. Mac users use (cmd + c) to copy and (cmd + v) to paste. Login Bookmark this page Link to this page Home ... Encyclopedia Index EXOBIOLOGY or astrobiology, search for extraterrestrial life within the solar system and throughout the universe. Philosophical speculation that there might be other worlds similar to ours dates back to the ancient Chinese and Greeks. However, the achievements of space exploration and molecular biology have turned speculation into experimentation. Parameters of a Suitable Environment for Life There are six basic parameters that determine whether an environment is suitable for life as we know it: temperature, pressure, salinity, acidity, water availability, and oxygen content. Advanced life is restricted to a narrow range of these parameters, but primitive microorganisms exist over a much wider range. Data already collected by space probes essentially rule out advanced life on other planets of our solar system; however, given the potential number of planetary systems in the galaxy, there may be as many as 50,000 planets that have earthlike conditions, a fraction of which could have cultures as technologically advanced as our own. Three decades of passive listening with radio telescopes have produced no signals comparable to those radiating from earth, but we do not know if another civilization would produce electromagnetic radiation in detectable amounts. The Search for Primitive Life

20. Exobiology: Definition And Much More From Answers.com exobiology n. The branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings on living. http://www.answers.com/topic/exobiology

BodyLoad('s'); Results for exobiology On this page: Select Article Dictionary Columbia Ency. Obscure Words WordNet Or search: - The Web - Images - News - Blogs - Shopping Dictionary exobiology ĕk sō-bī-ŏl ə-jē n. The branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings on living organisms. Also called astrobiology space biology exobiological ex o·bi o·log i·cal -ə-lŏj ĭ-kəl adj. exobiologist ex o·bi·ol o·gist n. ADVERTISEMENT Home Business Entertainment Food ... More... InitForm('lookup1','autodiv1','down'); Library Arts Business Entertainment Food ... Columbia Encyclopedia exobiology or astrobiology, search for extraterrestrial life within the solar system and throughout the universe. Philosophical speculation that there might be other worlds similar to ours dates back to the ancient Chinese and Greeks. However, the achievements of space exploration and molecular biology have turned speculation into experimentation. Parameters of a Suitable Environment for Life There are six basic parameters that determine whether an environment is suitable for life as we know it: temperature, pressure, salinity, acidity, water availability, and oxygen content. Advanced life is restricted to a narrow range of these parameters, but primitive microorganisms exist over a much wider range. Data already collected by space probes essentially rule out advanced life on other planets of our solar system; however, given the potential number of planetary systems in the galaxy, there may be as many as 50,000 planets that have earthlike conditions, a fraction of which could have cultures as technologically advanced as our own. Three decades of passive listening with radio telescopes have produced no signals comparable to those radiating from earth, but we do not know if another civilization would produce electromagnetic radiation in detectable amounts.

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