Why SETI Will Fail ‡
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UC Santa Cruz Other Recent Work
UC Santa Cruz Other Recent Work Title Robert B. Stevens: UCSC Chancellorship, 1987-1991 Permalink https://escholarship.org/uc/item/95h8k9w0 Authors Stevens, Robert Jarrell, Randall Regional History Project, UCSC Library Publication Date 1999-05-21 Supplemental Material https://escholarship.org/uc/item/95h8k9w0#supplemental eScholarship.org Powered by the California Digital Library University of California Introduction The Regional History Project conducted six interviews with UCSC Chancellor Robert B. Stevens during June and July, 1991, as part of its University History series. Stevens was appointed the campus’s fifth chancellor by UC President David P. Gardner in July, 1987, and served until July, 1991. He was the second UCSC chancellor (following Chancellor Emeritus Robert L. Sinsheimer) recruited from a private institution. Stevens was born in England in 1933 and first came to the United States when he was 23. He was educated at Oxford University (B.A., M.A., B.C.L., and D.C.L.) and at Yale University (L.L.M.) and became an American citizen in 1971. An English barrister, Stevens has strong research interests in legal history and education in the United States and England. He served as chairman of the Research Advisory Committee of the American Bar Foundation, has written a half dozen books on legal history and social legislation, and numerous papers on American legal scholarship and comparative Anglo-American legal history. Prior to his appointment at UCSC he served for almost a decade as president of Haverford College from 1978 until 1987. From 1959 to 1976 he was a professor of law at Yale University. -
Lecture-29 (PDF)
Life in the Universe Orin Harris and Greg Anderson Department of Physics & Astronomy Northeastern Illinois University Spring 2021 c 2012-2021 G. Anderson., O. Harris Universe: Past, Present & Future – slide 1 / 95 Overview Dating Rocks Life on Earth How Did Life Arise? Life in the Solar System Life Around Other Stars Interstellar Travel SETI Review c 2012-2021 G. Anderson., O. Harris Universe: Past, Present & Future – slide 2 / 95 Dating Rocks Zircon Dating Sedimentary Grand Canyon Life on Earth How Did Life Arise? Life in the Solar System Life Around Dating Rocks Other Stars Interstellar Travel SETI Review c 2012-2021 G. Anderson., O. Harris Universe: Past, Present & Future – slide 3 / 95 Zircon Dating Zircon, (ZrSiO4), minerals incorporate trace amounts of uranium but reject lead. Naturally occuring uranium: • U-238: 99.27% • U-235: 0.72% Decay chains: • 238U −→ 206Pb, τ =4.47 Gyrs. • 235U −→ 207Pb, τ = 704 Myrs. 1956, Clair Camron Patterson dated the Canyon Diablo meteorite: τ =4.55 Gyrs. c 2012-2021 G. Anderson., O. Harris Universe: Past, Present & Future – slide 4 / 95 Dating Sedimentary Rocks • Relative ages: Deeper layers were deposited earlier • Absolute ages: Decay of radioactive isotopes old (deposited last) oldest (depositedolder first) c 2012-2021 G. Anderson., O. Harris Universe: Past, Present & Future – slide 5 / 95 Grand Canyon: Earth History from 200 million - 2 billion yrs ago. Dating Rocks Life on Earth Earth History Timeline Late Heavy Bombardment Hadean Shark Bay Stromatolites Cyanobacteria Q: Earliest Fossils? Life on Earth O2 History Q: Life on Earth How Did Life Arise? Life in the Solar System Life Around Other Stars Interstellar Travel SETI Review c 2012-2021 G. -
2007 February
ARTICLE .1 Macro-Perspectives beyond the World System Joseph Voros Swinburne University of Technology Australia Abstract This paper continues a discussion begun in an earlier article on nesting macro-social perspectives to also consider and explore macro-perspectives beyond the level of the current world system and what insights they might reveal for the future of humankind. Key words: Macrohistory, Human expansion into space, Extra-terrestrial civilisations Introduction This paper continues a train of thought begun in an earlier paper (Voros 2006) where an approach to macro-social analysis based on the idea of "nesting" social-analytical perspectives was described and demonstrated (the essence of which, for convenience, is briefly summarised here). In that paper, essential use was made of a typology of social-analytical perspectives proposed by Johan Galtung (1997b), who suggested that human systems could be viewed or studied at three main levels of analysis: the level of the individual person; the level of social systems; and the level of world systems. Distinctions can be made between different foci of study. The focus may be on the stages and causes of change through time (termed diachronic), or it could be at some specific point in time (termed synchronic). As well, the focus may be on a specific single case (termed idiographic), in contrast to seeking regularities, patterns, or generalised "laws" (termed nomo- thetic). In this way, there are four main types of perspectives found at any particular level of analy- sis. This conception is shown here in slightly adapted form in Table 1.1 Journal of Futures Studies, February 2007, 11(3): 1 - 28 Journal of Futures Studies Table 1: Three Levels of Social Analysis Source: Adapted from Galtung (1997b). -
Carl Sagan's Groovy Cosmos
CARL SAGAN’S GROOVY COSMOS: PUBLIC SCIENCE AND AMERICAN COUNTERCULTURE IN THE 1970S By SEAN WARREN GILLERAN A thesis submitted in partial fulfillment of the requirements for the degree of MASTER OF ARTS IN HISTORY WASHINGTON STATE UNIVERSITY Department of History MAY 2017 © Copyright by SEAN WARREN GILLERAN, 2017 All Rights Reserved © Copyright by SEAN WARREN GILLERAN, 2017 All Rights Reserved To the Faculty of Washington State University: The members of the Committee appointed to examine the thesis of SEAN WARREN GILLERAN find it satisfactory and recommend that it be accepted. _________________________________ Matthew A. Sutton, Ph.D., Chair _________________________________ Jeffrey C. Sanders, Ph.D. _________________________________ Lawrence B. A. Hatter, Ph.D. ii ACKNOWLEDGEMENT This thesis has been years in the making and is the product of input from many, many different people. I am grateful for the support and suggestions of my committee—Matt Sutton, Jeff Sanders, and Lawrence Hatter—all of whom have been far too patient, kind, and helpful. I am also thankful for input I received from Michael Gordin at Princeton and Helen Anne Curry at Cambridge, both of whom read early drafts and proposals and both of whose suggestions I have been careful to incorporate. Catherine Connors and Carol Thomas at the University of Washington provided much early guidance, especially in terms of how and why such a curious topic could have real significance. Of course, none of this would have happened without the support of Bruce Hevly, who has been extraordinarily generous with his time and whose wonderful seminars and lectures have continued to inspire me, nor without Graham Haslam, who is the best teacher and the kindest man I have ever known. -
Qisar-Alexander-Ollongren-Astrolinguistics.Pdf
Astrolinguistics Alexander Ollongren Astrolinguistics Design of a Linguistic System for Interstellar Communication Based on Logic Alexander Ollongren Advanced Computer Science Leiden University Leiden The Netherlands ISBN 978-1-4614-5467-0 ISBN 978-1-4614-5468-7 (eBook) DOI 10.1007/978-1-4614-5468-7 Springer New York Heidelberg Dordrecht London Library of Congress Control Number: 2012945935 © Springer Science+Business Media New York 2013 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, speci fi cally the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on micro fi lms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Exempted from this legal reservation are brief excerpts in connection with reviews or scholarly analysis or material supplied speci fi cally for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Duplication of this publication or parts thereof is permitted only under the provisions of the Copyright Law of the Publisher’s location, in its current version, and permission for use must always be obtained from Springer. Permissions for use may be obtained through RightsLink at the Copyright Clearance Center. Violations are liable to prosecution under the respective Copyright Law. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a speci fi c statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. -
A Direct Communication Proposal to Test the Zoo Hypothesis
Space Policy 38 (2016) 22e26 Contents lists available at ScienceDirect Space Policy journal homepage: www.elsevier.com/locate/spacepol Viewpoint A direct communication proposal to test the Zoo Hypothesis Joao~ Pedro de Magalhaes~ Institute of Integrative Biology, University of Liverpool, Biosciences Building, Room 245, Crown Street, Liverpool, L69 7ZB, UK article info abstract Article history: Whether we are alone in the universe is one of the greatest mysteries facing humankind. Given the >100 Received 3 March 2016 billion stars in our galaxy, many have argued that it is statistically unlikely that life, including intelligent Accepted 16 June 2016 life, has not emerged anywhere else. The lack of any sign of extraterrestrial intelligence, even though on a Available online 26 July 2016 cosmic timescale extraterrestrial civilizations would have enough time to cross the galaxy, is known as Fermi's Paradox. One possible explanation for Fermi's Paradox is the Zoo Hypothesis which states that Keywords: one or more extraterrestrial civilizations know of our existence and can reach us, but have chosen not to Active SETI disturb us or even make their existence known to us. I propose here a proactive test of the Zoo Hy- Astrobiology fi Fermi's Paradox pothesis. Speci cally, I propose to send a message using television and radio channels to any extrater- Messaging to extraterrestrial intelligence restrial civilization(s) that might be listening and inviting them to respond. Even though I accept this is METI unlikely to be successful in the sense of resulting in a response from extraterrestrial intelligences, the possibility that extraterrestrial civilizations are monitoring us cannot be dismissed and my proposal is consistent with current scientific knowledge. -
Livre-Ovni.Pdf
UN MONDE BIZARRE Le livre des étranges Objets Volants Non Identifiés Chapitre 1 Paranormal Le paranormal est un terme utilisé pour qualifier un en- mé n'est pas considéré comme paranormal par les semble de phénomènes dont les causes ou mécanismes neuroscientifiques) ; ne sont apparemment pas explicables par des lois scien- tifiques établies. Le préfixe « para » désignant quelque • Les différents moyens de communication avec les chose qui est à côté de la norme, la norme étant ici le morts : naturels (médiumnité, nécromancie) ou ar- consensus scientifique d'une époque. Un phénomène est tificiels (la transcommunication instrumentale telle qualifié de paranormal lorsqu'il ne semble pas pouvoir que les voix électroniques); être expliqué par les lois naturelles connues, laissant ain- si le champ libre à de nouvelles recherches empiriques, à • Les apparitions de l'au-delà (fantômes, revenants, des interprétations, à des suppositions et à l'imaginaire. ectoplasmes, poltergeists, etc.) ; Les initiateurs de la parapsychologie se sont donné comme objectif d'étudier d'une manière scientifique • la cryptozoologie (qui étudie l'existence d'espèce in- ce qu'ils considèrent comme des perceptions extra- connues) : classification assez injuste, car l'objet de sensorielles et de la psychokinèse. Malgré l'existence de la cryptozoologie est moins de cultiver les mythes laboratoires de parapsychologie dans certaines universi- que de chercher s’il y a ou non une espèce animale tés, notamment en Grande-Bretagne, le paranormal est inconnue réelle derrière une légende ; généralement considéré comme un sujet d'étude peu sé- rieux. Il est en revanche parfois associé a des activités • Le phénomène ovni et ses dérivés (cercle de culture). -
Dynamics of the Arecibo Radio Telescope
DYNAMICS OF THE ARECIBO RADIO TELESCOPE Ramy Rashad 110030106 Department of Mechanical Engineering McGill University Montreal, Quebec, Canada February 2005 Under the supervision of Professor Meyer Nahon Abstract The following thesis presents a computer and mathematical model of the dynamics of the tethered subsystem of the Arecibo Radio Telescope. The computer and mathematical model for this part of the Arecibo Radio Telescope involves the study of the dynamic equations governing the motion of the system. It is developed in its various components; the cables, towers, and platform are each modeled in succession. The cable, wind, and numerical integration models stem from an earlier version of a dynamics model created for a different radio telescope; the Large Adaptive Reflector (LAR) system. The study begins by converting the cable model of the LAR system to the configuration required for the Arecibo Radio Telescope. The cable model uses a lumped mass approach in which the cables are discretized into a number of cable elements. The tower motion is modeled by evaluating the combined effective stiffness of the towers and their supporting backstay cables. A drag model of the triangular truss platform is then introduced and the rotational equations of motion of the platform as a rigid body are considered. The translational and rotational governing equations of motion, once developed, present a set of coupled non-linear differential equations of motion which are integrated numerically using a fourth-order Runge-Kutta integration scheme. In this manner, the motion of the system is observed over time. A set of performance metrics of the Arecibo Radio Telescope is defined and these metrics are evaluated under a variety of wind speeds, directions, and turbulent conditions. -
Aliens on Earth. Are Reports of Close Encounters Correct?
Aliens on Earth. Are reports of close encounters correct? Pawel Sobkowicz pawelsobko@ gmail. com (Dated: April 1st, 2012) Popular culture (movies, SF literature) and witness accounts of close encounters with extrater- restrials provide a rather bizarre image of Aliens behavior on Earth. It is far from stereotypes of human space exploration. The reported Aliens are not missions of diplomats, scientists nor even invasion fleets; typical encounters are with lone ETs (or small groups), and involve curious behav- ior: abductions and experiments (often of sexual nature), cattle mutilations, localized killing and mixing in human society using various methods. Standard scientific explanations of these social memes point to influence of cultural artifacts (movies, literature) on social imagination, projection of our fears and observations of human society, and, in severe cases, psychic disorder of the involved individuals. In this work we propose an alternate explanation, claiming that the memes might be the result of observations of actual behavior of true Aliens, who, visiting Earth behave in a way that is then reproduced by such memes. The proposal would solve, in natural way, the Fermi paradox. I. EXISTENCE OF EXTRATERRESTRIAL based on increased ratio of planet detection based on mi- CIVILIZATIONS crolensing [9], puts this ratio at close to 1 (estimating number of planets as close to the number of stars in the A. Drake equation Galaxy). Applying this correction to Franck et al. esti- mates gives us much larger number of Earth-like planets The two major problems faced today by scientists in- – about 50 million. Discussing temporal aspects of the Drake equation, terested in extraterrestrial civilizations are: how many ´ such civilizations exist today or existed before in the Cirkovi´c[10], stresses the importance of the longevity Milky Way? Provided the positive answer to the first of civilizations. -
SETI@Home Completes a Decade of ET Search 1 May 2009
SETI@home completes a decade of ET search 1 May 2009 Over the years, improvements to the Arecibo telescope have significantly improved the quality of data available to SETI@home, and the continuous increase in the speed of the average PC has made it possible to use more sensitive and sophisticated analysis techniques. Today, SETI@home continues its search for evidence of extraterrestrial life, with greater sensitivity than ever, and its hundreds of thousands of volunteers continue to engage in lively on-line forums and in a spirited competition The SETI@home project, which has involved the for most data processed. worldwide public in a search for radio-wave evidence of life outside Earth, marks its 10th More information: anniversary on May 17, 2009. setiathome.berkeley.edu/index.php The project, based at the Space Sciences Provided by SETI@home Laboratory at the University of California, Berkeley, records and analyzes data from the world's largest radio telescope, the Arecibo Observatory in Puerto Rico. The collected computing power of hundreds of thousands of volunteer PCs is used to search this data for narrow-band signals (similar to TV or cell-phone transmissions) and other types of signals of possible extraterrestrial origin. SETI@home was conceived in 1995. Development began in 1998, with initial funding from The Planetary Society and Paramount Pictures. It was publicly launched on May 17, 1999, and the number of volunteers quickly grew to about one million. Because of the presence of noise and man-made radio interference, SETI@home doesn't get excited by individual signals. -
The Ancient Aliens Guy, His Hair, and Extraterrestrial Imperialism
The Ancient Aliens Guy, His Hair, and Extraterrestrial Imperialism Proposal by Stephen Few, English 102 At some point during the past few years, you may have tuned into The History Channel in hopes of seeing Pawn Stars or a new documentary. Instead of finding what you were looking for, you may have come across a show called Ancient Aliens. When watching Ancient Aliens, it becomes evident very quickly that the show is trying to convince viewers that extraterrestrials have visited Earth in the past. It is obvious that many people begin watching the show for a good laugh once they realize this, because the show is continually made fun of on the Internet and in pop culture. Some people don’t watch long enough because Giorgio Tsoukalos and his crazy hair make the show appear silly and incredible. The odd thing is that some of the ideas are logically possible. The Ancient Astronaut Theory, for example, is a very interesting explanation to many historical mysteries, though it is not taken seriously as a scientific theory. Tsoukalos and his team’s theories on aliens visiting Earth in the past are theoretically possible, so we should consider the implications if their theory is true. What effects will alien visitors have on environmental issues, world religion and cultures, and political organizations around the world in the future? What kind of preparations need to be made by the world in order to prepare for the next alien visitation? Giorgio A. Tsoukalos doesn’t have the college credentials of a world-famous archeologist; as a matter of fact, his body building hobby and sports medicine degree are far from archeology. -
Astronomy Beat
ASTRONOMY BEAT ASTRONOMY BEAT /VNCFSt"QSJM XXXBTUSPTPDJFUZPSH 1VCMJTIFS"TUSPOPNJDBM4PDJFUZPGUIF1BDJöD &EJUPS"OESFX'SBLOPJ ª "TUSPOPNJDBM 4PDJFUZ PG UIF 1BDJöD %FTJHOFS-FTMJF1SPVEöU "TIUPO"WFOVF 4BO'SBODJTDP $" The Origin of the Drake Equation Frank Drake Dava Sobel Editor’s Introduction Most beginning classes in astronomy introduce their students to the Drake Equation, a way of summarizing our knowledge about the chances that there is intelli- ASTRONOMYgent life among the stars with which we humans might BEAT communicate. But how and why did this summary for- mula get put together? In this adaptation from a book he wrote some years ago with acclaimed science writer Dava Sobel, astronomer and former ASP President Frank Drake tells us the story behind one of the most famous teaching aids in astronomy. ore than a year a!er I was done with Proj- 'SBOL%SBLFXJUIUIF%SBLF&RVBUJPO 4FUI4IPTUBL 4&5**OTUJUVUF ect Ozma, the "rst experiment to search for radio signals from extraterrestrial civiliza- Mtions, I got a call one summer day in 1961 from a man to be invited. I had never met. His name was J. Peter Pearman, and Right then, having only just met over the telephone, we he was a sta# o$cer on the Space Science Board of the immediately began planning the date and other details. National Academy of Science… He’d followed Project We put our heads together to name every scientist we Ozma throughout, and had since been trying to build knew who was even thinking about searching for ex- support in the government for the possibility of dis- traterrestrial life in 1961.