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Sir Ulli
Grand Admiral Special
ich fasse mal die letzten Meldungen zusammen
The Seti Signal, und wie alles anfing
The Arecibo message
First, I will give some background to the original message sent from Arecibo, back in 1974.
Arecibo is on the northern coast of Puerto Rico and contains a natural disc-shaped hole in the rock. Inside this bowl was constructed the world's largest radio-telescope, with a diameter of 1000 feet.
In 1974 a number of modifications had been carried out to the transmitter, enabling it to broadcast signals at a power of up to 20 terawatts (1 terawatt = 1 trillion watts) and as an inaugural test of these improvements it was decided by SETI to transmit an encoded message to the heavens. This signal was aimed towards the globular star cluster M13, some 25,000 light years away and consisting of some 300,000 stars in the constellation of Hercules.
The message was actually transmitted on November 16th 1974 and consisted of 1679 pulses of binary code (0's and 1's) - which took a little under three minutes to transmit. It was transmitted on a frequency of 2380MHz (which is significant later).
Why 1679 digits?
The reason for this is down to mathematics. 1679 is the unique product of two prime numbers; 23 and 73. Any sufficiently intelligent lifeform would no doubt look for unique, universal constructs - such as prime numbers, chemical element frequencies and binary digits. Don't forget that because we could be trying to communicate with an intelligence completely different to our own, we cannot talk in terms of 'human' systems, such as centimetres, feet, decimal numbers etc.
Because ONLY the two prime numbers 23 and 73, when multiplied together, produce 1679 there can only be a single way to arrange the signal, if you were converting it into a matrix grid - 23 squares by 73 squares.
The original binary code is shown in figure 1.
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Full Story
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Seti Institute News
Era Ends: Looking Back on Project Phoenix
Image Credit: SETI Institute
Project Phoenix has left the building. There are empty spaces at Arecibo Observatory, but not for long. A new computer cluster is destined for the space occupied by fifteen Programmable Detection Modules. The cabinets that stored the spare components for the Phoenix search system are already reassigned to the RFI Monitoring and Electronics groups.
For the staff at Arecibo, another SETI project has ended, and life at the observatory goes on. But for us, life is in transition as we wrap up one project and begin another. As we wait in California for our equipment to arrive from Puerto Rico, it is a good time to look back on Project Phoenix. It wasn’t "just another" SETI project.
Looking back on Project Phoenix
weitere News
A Gathering of Planets
A Gathering of Planets
The five brightest planets are gathering in the evening sky for a rare after-dark display
All five naked-eye planets are visible at the same time in the evening sky from approximately March 21 through April 6, and the moon joins them from March 22 through April 2, passing each planet in turn. This is the best time for planet-viewing in the next several years.
To see all five planets at once, look shortly after sunset (at about 6:45 p.m.) from a place with an unobstructed view of the western horizon. Begin with the most brilliant planet, Venus, which is one-third of the way up the western sky. Venus outshines everything else in the night sky (except the moon, when visible), and it is unmistakable. Then look for Mercury, which is almost 30 degrees below and slightly to the right of Venus and a short distance above the horizon. (The width of your fist held at arm's length spans 10 degrees.) Mercury is much fainter than Venus, and you might look for it with binoculars. Mars looks like a star about 10 degrees to the upper left of Venus. Saturn is as bright as the brightest stars and it is nearly overhead at 6:45 p.m. Saturn in line with Mercury, Venus, and Mars, and is 45 degrees from Venus. Jupiter is second only to Venus in brightness, and it is opposite Venus and a third of the way up the eastern sky. All five planets fall on a line that stretches across the sky because all the planets orbit the sun in the same plane, and we are seeing that plane edge-on from earth.
Every few years or so, something wonderful happens:
all five naked-eye planets appear in the evening sky at the same time.
You can walk outside after dinner, and without any kind of telescope, see Mercury, Venus, Mars, Saturn, and Jupiter. Now is one of those times.
he show begins on March 22nd at sundown. Find a place where you can see the western horizon, and before the sky fades completely black, start looking for Mercury. It's that bright "star" shining through the rosy glow of the setting Sun. Can't find it? Use the Moon as a guide: On March 22nd Mercury will lie directly below the crescent Moon. Simple! Right: Three planets and the Moon, photographed on April 6, 2000, by Robert Wielinga of the Netherlands. This month's display of five planets will be even better.
Full Story at Science@NASA
oder here
MFG
Sir Ulli
The Seti Signal, und wie alles anfing
The Arecibo message
First, I will give some background to the original message sent from Arecibo, back in 1974.
Arecibo is on the northern coast of Puerto Rico and contains a natural disc-shaped hole in the rock. Inside this bowl was constructed the world's largest radio-telescope, with a diameter of 1000 feet.
In 1974 a number of modifications had been carried out to the transmitter, enabling it to broadcast signals at a power of up to 20 terawatts (1 terawatt = 1 trillion watts) and as an inaugural test of these improvements it was decided by SETI to transmit an encoded message to the heavens. This signal was aimed towards the globular star cluster M13, some 25,000 light years away and consisting of some 300,000 stars in the constellation of Hercules.
The message was actually transmitted on November 16th 1974 and consisted of 1679 pulses of binary code (0's and 1's) - which took a little under three minutes to transmit. It was transmitted on a frequency of 2380MHz (which is significant later).
Why 1679 digits?
The reason for this is down to mathematics. 1679 is the unique product of two prime numbers; 23 and 73. Any sufficiently intelligent lifeform would no doubt look for unique, universal constructs - such as prime numbers, chemical element frequencies and binary digits. Don't forget that because we could be trying to communicate with an intelligence completely different to our own, we cannot talk in terms of 'human' systems, such as centimetres, feet, decimal numbers etc.
Because ONLY the two prime numbers 23 and 73, when multiplied together, produce 1679 there can only be a single way to arrange the signal, if you were converting it into a matrix grid - 23 squares by 73 squares.
The original binary code is shown in figure 1.
Sehr interessant
Full Story
weitere News
Seti Institute News
Era Ends: Looking Back on Project Phoenix
Image Credit: SETI Institute
Project Phoenix has left the building. There are empty spaces at Arecibo Observatory, but not for long. A new computer cluster is destined for the space occupied by fifteen Programmable Detection Modules. The cabinets that stored the spare components for the Phoenix search system are already reassigned to the RFI Monitoring and Electronics groups.
For the staff at Arecibo, another SETI project has ended, and life at the observatory goes on. But for us, life is in transition as we wrap up one project and begin another. As we wait in California for our equipment to arrive from Puerto Rico, it is a good time to look back on Project Phoenix. It wasn’t "just another" SETI project.
Looking back on Project Phoenix
weitere News
A Gathering of Planets
A Gathering of Planets
The five brightest planets are gathering in the evening sky for a rare after-dark display
All five naked-eye planets are visible at the same time in the evening sky from approximately March 21 through April 6, and the moon joins them from March 22 through April 2, passing each planet in turn. This is the best time for planet-viewing in the next several years.
To see all five planets at once, look shortly after sunset (at about 6:45 p.m.) from a place with an unobstructed view of the western horizon. Begin with the most brilliant planet, Venus, which is one-third of the way up the western sky. Venus outshines everything else in the night sky (except the moon, when visible), and it is unmistakable. Then look for Mercury, which is almost 30 degrees below and slightly to the right of Venus and a short distance above the horizon. (The width of your fist held at arm's length spans 10 degrees.) Mercury is much fainter than Venus, and you might look for it with binoculars. Mars looks like a star about 10 degrees to the upper left of Venus. Saturn is as bright as the brightest stars and it is nearly overhead at 6:45 p.m. Saturn in line with Mercury, Venus, and Mars, and is 45 degrees from Venus. Jupiter is second only to Venus in brightness, and it is opposite Venus and a third of the way up the eastern sky. All five planets fall on a line that stretches across the sky because all the planets orbit the sun in the same plane, and we are seeing that plane edge-on from earth.
Every few years or so, something wonderful happens:
all five naked-eye planets appear in the evening sky at the same time.
You can walk outside after dinner, and without any kind of telescope, see Mercury, Venus, Mars, Saturn, and Jupiter. Now is one of those times.
he show begins on March 22nd at sundown. Find a place where you can see the western horizon, and before the sky fades completely black, start looking for Mercury. It's that bright "star" shining through the rosy glow of the setting Sun. Can't find it? Use the Moon as a guide: On March 22nd Mercury will lie directly below the crescent Moon. Simple! Right: Three planets and the Moon, photographed on April 6, 2000, by Robert Wielinga of the Netherlands. This month's display of five planets will be even better.
Full Story at Science@NASA
oder here
MFG
Sir Ulli
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Sir Ulli
Grand Admiral Special
das neueste Gerücht, ....
have someone heard the new Rumor, that Seti1 will end at 17 May it's 5th year anniversary...............
hmmmm, könnte aber durchaus sein.
MFG
Sir Ulli
have someone heard the new Rumor, that Seti1 will end at 17 May it's 5th year anniversary...............
hmmmm, könnte aber durchaus sein.
MFG
Sir Ulli
Sir Ulli
Grand Admiral Special
Return to the Ashes
by H. Paul Shuch, Ph.D.
Executive Director
hen launched a year prior, the two-pronged NASA SETI study which Congress cancelled in 1993 had been slated to run ten years. Thus, it seemed a miracle of rebirth when California's SETI Institute lauched its ambitious privatized search in 1994. Aptly dubbed Project Phoenix because it rose from the ashes of NASA SETI's demise, this targeted search continued for a decade, surveying all the sunlike stars within two hundred light years of Earth, from six great radio telescopes in Parkes and Mopra, Australia, Green Bank WV, Woodbury GA, Arecibo in Puerto Rico, and Jodrell Bank in the UK. Now that Project Phoenix has completed surveying the thousand nearest good suns (some would say better than NASA could have done the job), where does SETI go from here?
Not ones to rest on their laurels, the engineers and scientists at the SETI Institute are now directing their resources toward the design and construction of the world's most sensitive SETI instrument, the Allen Telescope Array. When it's completed, our California colleagues will no longer have to raise and spend millions renting time on big dishes around the world. In fact, researchers from numerous countries are already queueing up to rent telescope time from them! A few years' observational hiatus is a small price to pay for the birthing of so grand an instrument.
Does this mean that SETI observations are now at a standstill? Hardly! For there's still that other prong of the old NASA SETI plan, the all-sky survey. This is where The SETI League came in nine years ago, with our Project Argus global search. And we're just hitting our stride.
...
So we deem Project Phoenix a success. True, in ten years it has produced not one single confirmed signal of intelligent extraterrestrial origin. But it's done its job, very thoroughly and very well. We now know where to concentrate our efforts: just where The SETI League has been focusing all along.
Is SETI returning to the ashes? Not at all. Our passion and prospects for interstellar contact have never burned brighter.
Full Story at SETILeague
MFG
Sir Ulli
by H. Paul Shuch, Ph.D.
Executive Director
hen launched a year prior, the two-pronged NASA SETI study which Congress cancelled in 1993 had been slated to run ten years. Thus, it seemed a miracle of rebirth when California's SETI Institute lauched its ambitious privatized search in 1994. Aptly dubbed Project Phoenix because it rose from the ashes of NASA SETI's demise, this targeted search continued for a decade, surveying all the sunlike stars within two hundred light years of Earth, from six great radio telescopes in Parkes and Mopra, Australia, Green Bank WV, Woodbury GA, Arecibo in Puerto Rico, and Jodrell Bank in the UK. Now that Project Phoenix has completed surveying the thousand nearest good suns (some would say better than NASA could have done the job), where does SETI go from here?
Not ones to rest on their laurels, the engineers and scientists at the SETI Institute are now directing their resources toward the design and construction of the world's most sensitive SETI instrument, the Allen Telescope Array. When it's completed, our California colleagues will no longer have to raise and spend millions renting time on big dishes around the world. In fact, researchers from numerous countries are already queueing up to rent telescope time from them! A few years' observational hiatus is a small price to pay for the birthing of so grand an instrument.
Does this mean that SETI observations are now at a standstill? Hardly! For there's still that other prong of the old NASA SETI plan, the all-sky survey. This is where The SETI League came in nine years ago, with our Project Argus global search. And we're just hitting our stride.
...
So we deem Project Phoenix a success. True, in ten years it has produced not one single confirmed signal of intelligent extraterrestrial origin. But it's done its job, very thoroughly and very well. We now know where to concentrate our efforts: just where The SETI League has been focusing all along.
Is SETI returning to the ashes? Not at all. Our passion and prospects for interstellar contact have never burned brighter.
Full Story at SETILeague
MFG
Sir Ulli
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