Top Document: [sci.astro] ET Life (Astronomy Frequently Asked Questions) (6/9) Previous Document: F.07 What's a Dyson spheres? Next Document: F.09 Why search for extraterrestrial intelligence using radio? Why not See reader questions & answers on this topic! - Help others by sharing your knowledge Some of the following material is from SETIQuest Magazine, copyright Helmers Publishing, and used by permission. Project BETA (Billion-channel ExtraTerrestrial Assay) is a radio search begun 1995 October 30. It is sponsored by the Planetary Society and is an upgraded version of Project META (Million...). (Actually META I; see below for META II.) META I/BETA's observatory is the 26-meter radio antenna at Harvard, Massachusetts. Their Web site is <URL:http://planetary.org/BETA/>. META II uses a 30-meter antenna at the Argentine Institute for Radio Astronomy, near Buenos Aires, Argentina, and provides coverage of the southern sky. <URL:http://seti.planetary.org/META2/> META I/II monitored 8.4 million channels at once with a spectral resolution of 0.05 Hz, an instantaneous bandwidth of 0.4 MHz, a total frequency coverage of 1.2 MHz, a maximum sensitivity of 7x10^-24 W m^-2, and a combined sky coverage of 93 percent. After five years of observations from the northern hemisphere and observing 6x10^13 different signals, META I found 34 candidates, or "alerts". Unfortunately, the data are insufficient to determine their real origin. Interestingly, the observed signals seem to cluster near the galactic plane, where the major density of Milky Way stars dwell. META II, after three years of observations and surveying the southern hemisphere sky almost three times, found nineteen signals with similar characteristics to the META I results. META II has also observed eighty nearby, main sequence stars (less than fifty light years from the Sun) that have the same physical characteristics as Earth's star. These observations were performed using the tracking mode for periods of one hour each at two different epochs. On 1992 October 12, NASA began its first SETI program called HRMS---High-Resolution Microwave Survey. Unfortunately for all, Congress decided the project was spending way too much money---even though it received less funds per year than your average big league sports star or film actor---and cut all money to NASA for SETI work. This act saved our national deficit by all of 0.0002 percent. Fortunately, NASA SETI was saved as a private venture called Project Phoenix and run by The SETI Institute. It operates between 1.0 and 3.2 GHz with 1 Hz resolution and 2.8E7 channels at a time. Rather than trying to scan the entire sky, this survey focusses on approximately 1000 nearby stars. They began observations in 1995 February using the Parkes 64 m radio telescope in New South Wales, Australia, and have since moved to the 42 m radio telescope in Green Bank, West Virginia. After completing about 1/3 of their targets, they had found no evidence of ET transmissions. More details are in SETIQuest issue 3 and at the Project Phoenix home page <URL:http://www.seti-inst.edu/phoenix/Welcome.html>. The Web site has lots of general information about SETI as well as details of the survey. Since 1973, Ohio State University had conducted a radio search with a telescope consisting of a fixed parabolic reflector and a tiltable flat reflector, each about 110 m wide and 30 m high. Information is available at <URL:http://everest.eng.ohio-state.edu/~klein/ro/> or a longer version in SETIQuest issue 3. The "wow!" signal, detected in 1977, had the appearance of an extraterrestrial signal but was seen only briefly and never repeated. However, the Ohio State University administration decided to let the landlord who owns the property on which Big Ear resides tear down the radio telescopes and put up condos and a golf course instead. OSU SETI is considering its next step, Project Argus, at an undetermined location. The UC Berkeley SETI Program, SERENDIP (Search for Extraterrestrial Radio Emissions from Nearby Developed Intelligent Populations) is an ongoing scientific research effort aimed at detecting radio signals from extraterrestrial civilizations. The project is the world's only "piggyback" SETI system, operating alongside simultaneously conducted conventional radio astronomy observations. SERENDIP is currently piggybacking on the 300 m dish at Arecibo Observatory in Puerto Rico, the largest radio telescope in the world. Information at <URL:http://albert.ssl.berkeley.edu/serendip/>, from which this paragraph was extracted. SERENDIP operates at 430 MHz; more information is given in SETIQuest issue 3. Project BAMBI is an amateur SETI effort operating at a radio frequency of 4 GHz. See SETIQuest issue 5 and <URL:http://wbs.net/sara/bambi.htm> for status reports. The Columbus Optical SETI Observatory uses visible light instead of radio waves. The COSETI Observatory is a prototype observatory located in Bexley, Ohio, USA. Telescope aperture size is 30 cm. More information in SETIQuest issue 4 and at <URL:http://www.coseti.org/>. Much of the work on "Optical SETI" comes from Dr. Stuart A. Kingsley <skingsle@magnus.acs.ohio-state.edu>, who also maintains BBS on Optical SETI. The Planetary Society maintains a list of online SETI-related material at <URL:http://seti.planetary.org/>. And of course SETIQuest magazine, Larry Klaes, Editor. For subscription or other information, contact Helmers Publishing, 174 Concord Street, Peterborough, NH 03458-0874. Phone (603) 924-9631, FAX (603) 924-7408, Internet: sqinqnet@pixelacres.mv.com or see <URL:http://www.setiquest.com/>. Other references: Frank Drake, Dava Sobel, Is Anyone Out There: The Scientific Search For Extraterrestrial Intelligence, 1992, Delacorte Press, ISBN 0-385-30532-X. Frank White, The SETI Factor, 1990, Walker Publishing Company, Inc., ISBN 0-8027-1105-7. Donald Goldsmith and Tobias Owen, The Search For Life in the Universe, Second Edition, 1992, Addison-Wesley Publishing Company, Inc., ISBN 0-201-56949-3. Walter Sullivan, We Are Not Alone: The Continuing Search for Extraterrestrial Intelligence, 1993, Dutton, ISBN 0-525-93674-2. G. Seth Shostak, Editor, Progress In The Search For Extraterrestrial Life, 1993 Bioastronomy Symposium, Santa Cruz, California, 16--20 August 1993. Published in 1995 by The Astronomical Society of the Pacific (ASP). ISBN 0-937707-93-7. The journals Icarus, <URL:http://astrosun.tn.cornell.edu/Icarus/>, and Astronomy & Geophysics often feature papers concerning SETI. User Contributions:Top Document: [sci.astro] ET Life (Astronomy Frequently Asked Questions) (6/9) Previous Document: F.07 What's a Dyson spheres? Next Document: F.09 Why search for extraterrestrial intelligence using radio? Why not Part0 - Part1 - Part2 - Part3 - Part4 - Part5 - Part6 - Part7 - Part8 - Single Page [ Usenet FAQs | Web FAQs | Documents | RFC Index ] Send corrections/additions to the FAQ Maintainer: jlazio@patriot.net
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