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: 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?

4. 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.

5. 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 = "other"; 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

6. Astrobiology - MSN Encarta Astrobiology or exobiology, study of the origin, evolution, distribution exobiology is accepted as a study area within astrobiology in both approaches. 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 Astrobiology Also on Encarta 7 tips for funding an online degree How to succeed in the fashion industry without being a top designer Presidential Myths Quiz Advertisement Astrobiology Encyclopedia Article Find Print E-mail Blog It Multimedia 9 items Article Outline Introduction The Probability of Life in the Galaxy Life on Earth Looking for Life Beyond Earth ... Search for Intelligent Life I Introduction Print this section Astrobiology or Exobiology , study of the origin, evolution , distribution, and future of life in the universe, including life on Earth . The term exobiology may be used interchangeably with the term astrobiology . Some scientists, however, restrict exobiology to mean only the study of how life might exist beyond Earth (extraterrestrial life). Exobiology is accepted as a study area within astrobiology in both approaches. Astrobiologists investigate how the formation of stars and solar systems led to the existence of planets suitable for life and how life originated on Earth and perhaps elsewhere. Astrobiologists also explore which factors have influenced biological

7. 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.

8. Astrochemistry's Links exobiology is the study of the origin of life on this or other planets. NASA Ames exobiologyexobiology research within the above link. http://web99.arc.nasa.gov/~astrochm/originlinks.html

Origin of Life, Exobiology, Astrobiology a page of links and more Exobiology is the study of the origin of life on this or other planets. It is a highly interdisciplinary subject which employs chemistry, biology, astronomy, geology, and all of the fields between. As a result, web pages relevant to the origin of life tend to be scattered. Here is a compilation of a few links to the origin of life and related subjects. Clicking on the ball opens the link in a new window (with JavaScript and a version 3 or newer browser) Origins of Life Programs NSCORT: Exobiology Origin of life research, a consortium among UCSD (departments of Chemistry and Scripps Institution of Oceanography (SIO) The Scripps Research Institute (TSRI) , and The Salk Institute NSCORT: The New York Center for Studies of the Origins of Life Origin of life research at RPI and SUNY Albany NASA Ames Space Sciences Origin of life research and more. NASA Ames Exobiology Exobiology research within the above link. NASA Astrobiology Institute A grand program designed to cut to the heart of the origin of life via many institutions Ames Penn State UCLA ... U. Colorado

9. The Extrasolar Planets Page Exploration of Mars, Europa, and Titan. Titan as an exobiology Laboratory Europa as a Suitable Habitat for Life The Search for Water and Life on Mars http://www.markelowitz.com/exobiology.htm

Extrasolar Planetary Systems Detection of Earth-like Planets with Large Telescopes Using large space-based telescopes (>10-meter) Astronomers could search for terrestrial planets with atmospheres suitable for life as we know it. Spectroscopy could be used to detect the presence of Ozone, an indicator of oxygen in the atmosphere as well as water bands. Methane produced as a result of biogenic activity could be searched for using the same methods. Using telescopes in Earth orbit planets could be searched for using direct detection methods. Stellar coronagraphs can be used to supress the light from the planet's parent star making detection easier. There is a higher probability of detecting planetary companions around nearby stars in the infrared portion of the electromagnetic spectrum. This is due to the fact that the star to planet flux ratio is less in this region of the spectrum than in the visible. To separate a planetary companion from its primary stellar halo, one must use a telescope (or array of telescopes) with an aperture (or baseline) B such that r/D is greater than or equal to the wavelength at which the observation is being carried out divided by the aperture (or baseline) of the telescope (or array of telescopes). Stellar Habitable Zone Habitable Zones About Main Sequence Stars - Mass(Ms) Type Continuously Habitable Zone r(inner) r(outer) width 1.20 F7 1.616 1.668 0.054 1.15 F8 1.420 1.481 0.061 1.10 F9 1.240 1.310 0.069 1.05 G0 1.086 1.150 0.064 1.00 G2 0.958 1.004 0.046 0.95 G5 0.837 0.867 0.030 0.90 G8 0.728 0.743 0.015 0.85 K0 0.628 0.629 0.001 0.835 K1 0.598 0.598 Distance and widths are given in AUs

10. 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

11. Adamski Foundation - Exobiology / UFOs Adamski Foundation exobiology / UFOs Addresses the indications of advanced civilizations on other planets. http://www.gafintl-adamski.com/

Spanish Version "Las respuestas en Español están limitadas al tiempo de que se disponga. Se agradecería si pudieran enviar sus preguntas y comentarios a ser posible en Inglés." [Limited Spanish responses based upon volunteer time only, please send Your comments in English if possible.] Spanish Translation for G.A.F. by: Jesus Millan Arias - Barcelona - Spain Click to continue Indications of advanced human civilizations on other planets and implications for earth: Welcome to The Only Authorized Information Adamski Foundation Email gafintl @ aol.com (New mail as of 2007) (spam pervention: cut and paste address into your email program to send) Viewing Information: BROWSER Navigator or Microsoft Internet Explorer MONITOR - This site is designed to display at a 640x480 screen resolution. To see this important information, animations and photos as they are intended to be viewed, set your monitor to view 32 bit color, or as many colors as possible. Set your browser font to default. Download PERMISSION / STIPULATIONS pdf file Click Here Look to the stars... where others already are

12. Exobiology Of Comets And Meteorites: Annotated Bibliography ABSTRACT. The recent discovery of possible microfossils in ALH84001 has generated another round in the debate about life in meteorites and/or comets. http://web.mit.edu/redingtn/www/netadv/bioast/clash/index.html

The Net Advance of Physics: ANNOTATED BIBLIOGRAPHIES, No. 1 Organic and Pre-Biotic Chemistry of Meteorites and Comets: 1834-1996 First Edition, 1996 August 19. Last Updated: October 24. ABSTRACT: Text of Article: Annotated Bibliographies: General Overviews of Subject Papers to 1950 Abiotic Synthesis of Meteoritic Organic Matter Influx of Prebiotic Material from Space ... RETURN TO NET ADVANCE OF PHYSICS HOMEPAGE

13. Astrobiology - Wikipedia, The Free Encyclopedia Given the influx of new information about planetary systems around other stars, its mandate has expanded beyond the study of exobiology (from Greek , http://en.wikipedia.org/wiki/Astrobiology

Astrobiology From Wikipedia, the free encyclopedia Jump to: navigation search This article is about the scientific discipline. For the journal, see Astrobiology (journal) The DNA structure might not be the only nucleic acid in the universe capable of supporting life Astrobiology (from Greek: ἀστρο, astro , "constellation"; βίος, bios , "life"; and λόγος, logos , "knowledge") is the interdisciplinary study of life in the universe, combining aspects of astronomy biology and geology . It is focused primarily on the study of the origin , distribution and evolution of life. Given the influx of new information about planetary systems around other stars, its mandate has expanded beyond the study of exobiology (from Greek: έξω, exo , "outside") per se. The term "Xenobiology" is sometimes used as well. Some major astrobiological research topics include: What is life ? How did life arise on Earth ? What do astrophysical observations tell us about the present and future of life on earth? What kind of environments can life tolerate? How can we determine if life exists on other planets ? How often can we expect to find complex life? What will life consist of on other planets? Will it be DNA/Carbon based or based on something else? What will it look like?

14. Exobiology: The Search Of Life On Mars Major exobiology goals for Mars are to. Determine whether life presently exists on Mars or, For more on exobiology, follow one of these links; http://cmex.ihmc.us/SiteCat/sitecat2/exobiolo.htm

Exobiology: The Search for Life on Mars Exobiologists seek to understand how life originated on Earth by studying chemical and physical conditions elsewhere in our solar system and our galaxy. The origin of life on Earth is not well understood but was evidently based on chemical evolution from simple compounds present on the newly formed planet to create a system of replicating organic chemicals. Unfortunately, it is difficult to study early Earth directly because the earliest geological formations have been largely erased by erosion and deposition. In contrast, on Mars we can still see the early crust in the form of heavily cratered highlands. Major exobiology goals for Mars are to Determine whether life presently exists on Mars or, as is thought more likely, has existed in the past Define the nature of early martian environments and understand differences from the early environments of Earth Determine the history of the biogenic elements (Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur, Phosphorus) on Mars and of organic chemistry there (that is, the chemistry of carbon bearing compounds whether biologic or abiologic in origin) In order to achieve these goals

15. Definition: Exobiology From Online Medical Dictionary exobiology. The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, http://cancerweb.ncl.ac.uk/cgi-bin/omd?exobiology

16. Space Science Division - SSX Branch scientists provide expertise in exobiology, astrobiology, planetary protection, and other areas of planetary science to NASA Headquarters and http://www-space.arc.nasa.gov/branches_EB.htm

Last Updated: April 16, 2002 Home Site Map Feedback What's New Exobiology Branch (SSX) Overview Exobiology studies includes the history, distribution, and chemistry of biogenic elements in the solar system; prebiotic chemical evolution and the origin of life; and the history of Earth's early biosphere as recorded in microorganisms and ancient rocks. The research is conducted both on Earth and in space. The Branch also serves as the center of expertise within the agency for issues of planetary protection. As the agency lead center in exobiology, Branch exobiologists exercise a leadership role in NASA's Exobiology Program through program planning, performance reviews, advisory services to related NASA programs, and external relations. David Blake Branches David Hollenbach nominated for the CAA Astrobiology Explorer selected for feasibility study D. DesMarais receives honorary title. L. Delzeit reveals groundbreaking inventions ... Astrobiology Technology Notices Related Links Annual Report NASA Laboratory Astrophysics Workshop Office of Space Science Ames Research Center ... SETI Institute

17. Cosmology This page contains information about courses Cosmology and exobiology read in the fall semester 1999 and Cosmology and particle physics read in the fall http://www.asu.cas.cz/~had/cosm.html

18. 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.

19. Boggy's Links To Exobiology Ad Astra Magazine Astrobiology EXPANDED EDITION JanuaryFebruary 1999; Cosmic Evolution; exobiology - An Interview with Stanley L. 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

20. Exobiology — Infoplease.com exobiology or astrobiology,search for extraterrestrial life within the solar system and throughout the universe. Philosophical speculation that there might http://www.infoplease.com/ce6/sci/A0818031.html

Site Map FAQ in All Infoplease Almanacs Biographies Dictionary Encyclopedia Spelling Checker Daily Almanac for Mar 31, 2008 Search White Pages Skip Navigation Home Almanacs ... Word of the Day Editor's Favorites Women's History Month Kosovo Country Profile School Shootings Timeline April Fools' Day ... 2007 Year in Review Search: Infoplease Info search tips Search: Biographies Bio search tips google_ad_client = 'pub-1894504138907931'; google_ad_width = 120; google_ad_height = 240; google_ad_format = '120x240_as'; google_ad_type = 'text'; google_ad_channel =''; google_color_border = ['336699','B4D0DC','DFF2FD','B0E0E6']; google_color_bg = ['FFFFFF','ECF8FF','DFF2FD','FFFFFF']; google_color_link = ['0000FF','0000CC','0000CC','000000']; google_color_url = ['008000','008000','008000','336699']; google_color_text = ['000000','6F6F6F','000000','333333']; Encyclopedia exobiology 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. Sections in this article: Introduction Parameters of a Suitable Environment for Life The Search for Primitive Life Bibliography The Columbia Electronic Encyclopedia

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