Rules & policies

Run SETI@home only on authorized computers

Run SETI@home only on computers that you own, or for which you have obtained the owner's permission. Some companies and schools have policies that prohibit using their computers for projects such as SETI@home.

How SETI@home will use your computer

When you run SETI@home on your computer, it will use part of the computer's CPU power, disk space, and network bandwidth. You can control how much of your resources are used by SETI@home, and when it uses them.

The work done by your computer contributes to the goals of SETI@home, as described on its web site. The application programs may change from time to time.

Privacy policy

Your account on SETI@home is identified by a name that you choose. This name may be shown on the SETI@home web site, along with a summary of the work your computer has done for SETI@home. If you want to be anonymous, choose a name that doesn't reveal your identity.

If you participate in SETI@home, information about your computer (such as its processor type, amount of memory, etc.) will be recorded by SETI@home and used to decide what type of work to assign to your computer. This information will also be shown on SETI@home's web site. Nothing that reveals your computer's location (e.g. its domain name or network address) will be shown.

To participate in SETI@home, you must give an address where you receive email. This address will not be shown on the SETI@home web site or shared with organizations. SETI@home may send you periodic newsletters; however, you can opt out at any time.

Is it safe to run SETI@home?

Any time you download a program through the Internet you are taking a chance: the program might have dangerous errors, or the download server might have been hacked. SETI@home has made efforts to minimize these risks. We have tested our applications carefully. Our servers are behind a firewall and are configured for high security. To ensure the integrity of program downloads, all executable files are digitally signed on a secure computer not connected to the Internet.

The applications run by SETI@home may cause some computers to overheat. If this happens, stop running SETI@home or use a utility program that limits CPU usage.

SETI@home was developed by University of California. BOINC was developed at the University of California.

Liability

SETI@home and University of California assume no liability for damage to your computer, loss of data, or any other event or condition that may occur as a result of participating in SETI@home.

Other BOINC projects

Other projects use the same platform, BOINC, as SETI@home. You may want to consider participating in one or more of these projects. By doing so, your computer will do useful work even when SETI@home has no work available for it.

These other projects are not associated with SETI@home, and we cannot vouch for their security practices or the nature of their research. Join them at your own risk.

منبعseti@home  

دعوت به همکاری

مطلبی که می نویسم راجع به پروژه ی seti@home است که من این پروژه رو در روز نجوم سعی می کنم به مردم توضیح کامل بدم و در این پست من مطلب مختصری راجع به ان مینویسم که همه دوستان با این پروژه اشنا شوند و امیدوارم که همه از این مطلب بهره ببرند.

اول از همه  من شما را با این پروژه اشنا می کنم این پروژه تنها یک اسکرین سیور است که بر روی کامپیوترها نصب می شود و از وقت بی کاری کامپیوتر شما استفاده می کند ،و در واقع بشقاب ۳۰۵ متری ارسیو حجم اصلی اطلاعات ستی رو  فراهم می کند

 

این بشقاب عظیم درون دره ای در جنگل های استوایی پرتوریکو قرار دارد و کاملا ثابت است اما گیرنده ی ان جابه جا میشودو شما می توانید غربال کردن امواج دریافتی رو ببینید و هر بار که این بسته ها غربال شدند شما به اینترنت وصل می شوید و بسته ای رو که غربال شده ،می فرستید و بسته ی جدیدی می گیرید به همین راحتی ..............

لطفا به این پروژه بپیوندید، وضع ایران در مقایسه با سایر کشورها در مورد ستی خیلی افتضاحه طوری که من وقتی داشتم در قسمت گروهی وبسایت بازدید می کردم از خودم خجالت کشیدم چون من ایرانیم و ایران در قسمت کار گروهی در قسمت ضعیف ترین کشورها بود.

امیدوارم که شما نیز به این طرح بپیوندید .من احتمالا در روز نجوم که در ۲۰ اردیبهشت برگزار می شود بتوانم عده ی بیشتری از مردم را با همکاری دوستانم به این بخش از علم اشنا کنم.

 

برای مطالعه ی بیشتر:

seti@home

مجله نجوم شماره های ۱۴۱(سلام زمینی) ۳۵(طرح متا،ارتباط با هوشمندان برون زمینی)

 

 

 

 

اخترشناسان اولین مولکول الی را بر سطح یک سیاره ی فرا خورشیدی کشف کردند

A team of astronomers led by Mark Swain of NASA's Jet Propulsion Laboratory, Pasadena, Calif., has made the first detection ever of an organic molecule in the atmosphere of a Jupiter-sized planet orbiting another star. The breakthrough, made with NASA's Hubble Space Telescope, is an important step in eventually identifying signs of life on a planet outside our solar system.

The molecule found by Hubble is methane, which under the right circumstances can play a key role in prebiotic chemistry - the chemical reactions considered necessary to form life as we know it.

This discovery proves that Hubble and upcoming space missions, such as NASA's James Webb Space Telescope, can detect organic molecules on planets around other stars by using spectroscopy, which splits light into its components to reveal the "fingerprints" of various chemicals.

"This is a crucial stepping stone to eventually characterizing prebiotic molecules on planets where life could exist," said Swain, lead author of a paper appearing in the March 20 issue of Nature.

The discovery comes after extensive observations made in May 2007 with Hubble's Near Infrared Camera and Multi-Object Spectrometer. It also confirms the existence of water molecules in the planet's atmosphere, a discovery made originally by NASA's Spitzer Space Telescope in 2007. "With this observation there is no question whether there is water or not - water is present," said Swain.

The planet now known to have methane and water is located 63 light-years away in the constellation Vulpecula. Called HD 189733b, the planet is so massive and so hot it is considered an unlikely host for life. HD 189733b, dubbed a "hot Jupiter," is so close to its parent star it takes just over two days to complete an orbit. These objects are the size of Jupiter but orbit closer to their stars than the tiny innermost planet Mercury in our solar system. HD 189733b's atmosphere swelters at 1700 degrees Fahrenheit, about the same temperature as the melting point of silver.

Though the star-hugger planet is too hot for life as we know it, "this observation is proof that spectroscopy can eventually be done on a cooler and potentially habitable Earth-sized planet orbiting a dimmer red dwarf-type star," Swain said. The ultimate goal of studies like these is to identify prebiotic molecules in the atmospheres of planets in the "habitable zones" around other stars, where temperatures are right for water to remain liquid rather than freeze or evaporate away.

The observations were made as the planet HD 189733b passed in front of its parent star in what astronomers call a transit. As the light from the star passed briefly through the atmosphere along the edge of the planet, the gases in the atmosphere imprinted their unique signatures on the starlight from the star HD 189733.

The astronomers were surprised to find that the planet has more methane than predicted by conventional models for "hot Jupiters." "This indicates we don't really understand exoplanet atmospheres yet," said Swain.

"These measurements are an important step to our ultimate goal of determining the conditions, such as temperature, pressure, winds, clouds, etc., and the chemistry on planets where life could exist. Infrared spectroscopy is really the key to these studies because it is best matched to detecting molecules," said Swain.

More information on the discovery and artist's concepts are online at: http://hubblesite.org/news/2008/11 . Swain's co-authors on the paper include Gautam Vasisht of JPL and Giovanna Tinetti of University College, London.

The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency and is managed by NASA's Goddard Space Flight Center in Greenbelt, Md. The Space Telescope Science Institute conducts Hubble science operations. The institute is operated for NASA by the Association of Universities for Research in Astronomy, Inc., Washington, DC. Scheduled for launch in 2013, the James Webb Space Telescope is an international collaboration between NASA, ESA, and the Canadian Space Agency (CSA). GSFC is managing the development effort. The prime contractor is Northrop Grumman Space Technologies. STScI will operate JWST after launch.

JPL manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology, also in Pasadena. Caltech manages JPL for NASA. Previous Spitzer discoveries regarding HD 189733b from Swain and others can be read at http://www.spitzer.caltech.edu/Media/releases/ssc2007-04/release.shtml .


منبعjpl.nasa