A concert in space would be sweet! Put a few speakers on some satellites and laser up some pics... B) I'd be one to focus.

But one would not hear the music from the speakers as sound doesn't travel in space.

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

No matter - we'd just need a heap of Cohlear implants and long-range transmitters instead of speakers . But then that'd kinda be pointless.

We can now watch those outer planet outside our Sol system, check for occults, baseline signature of the star. Then we can analyze the spectrum when the planet occults its star.
We may already be polluting these star systems with our UHF-TV signals. Our transmitters on satellites may also be leaking signals, sending to other stars.

Some of our systems have already checked for life, most notable theUSAs NASAVyager and Galileo have also checked for life, first by detecting on Earth ( to see if their systems are working ). They can check for methane in an oxygen air, and check for water. They could also show modulating rasdios signal, a process which shows that this is a unnatural radio wave, profe of life on the planet.

I, of course, could be mistaken; sometime ago I heard of some sort of communication experiment in space of either the sounds of certain things here on Earth (like the 1st cry of a newborn) or maybe it was some sort of slide show. Does anyone else recollect my not so fine tuned memory? :blink: :unsure:

I stumbled on to this board purely by accident and I read all the posts concerning the prime numbers (and the binary) and I can answer a few questions.



Largest known prime is the mersenne prime 2^(220996011)-1 (read as 2 to the 220996011 power minus 1) and has a length of 6,320,430 digits. The following link gives you an idea of the number's size once expanded into decimal form.
http://www.perfsci.com/novelties.htm#framed
Modern Mersenne primes are of the form 2^P - 1 where P is a prime number. You can easily prove that by using a Rabin-miller SPRP test.


You actually know how to do it, it's just that you aren't aware of it.
18.91 can be decomposed into 1 *(10^1) + 8 *(10^0) + 9 *(10^-1) + 1 *(10^-2)
11.01 is thus decomposed into 1 *(2^1) + 1 *(2^0) + 0 *(2^-1) + 1 *(2^-2)

So 11.01 in decimal is 2 + 1 + 0/2 + 1/4 = 3.25



Actually that is not the case, voltage and current like the greatest majority of measurements is continous. Electronics use a system of (high/low) (1/0) because all previous attemps to make decimal computers failed but that does not make it impossible. Binary works because it is easier to cut a signal into high/low. If you wanted to use the decimal system you'd have to cut a signal into 10 parts. However suppose that there is a glitch in the voltage, then you can suddenly go from one range to a different range. With binary the possibility for such an error is greatly minized (the only glitch is if a voltage suddenly appears). The possibility for a glitch is still possible in binary, so many electronic devices still have some error correcting circuitry to reduce it to acceptable levels.


Anyway I hope that this adds more info to the questions... Even though Thorn + Kashi tackled most of them flawlessly.

While one the topic of inter-alien communication, how long would it take for a simple radio wave to travel back and forth between two systems? :huh:

Would it not take such a log time the it could mean that one or even both civilizations could be extinct before even one reply could be made? One would need a communication systems that would be a lot faster for any hope of communication. (We are not that advanced yet, are we? :unsure: ) I believe that other aliens have also come to realize as should we, that slow communication is a waist of time and energy. Direct face-to-face (face-to-?) is the only productive course of action.

An interesting but of philosophy - 'If man creates the problem, it can surely not be hard for man to solve it".

The very thing that makes the distribution of prime numbers so fascinating is that they are indeed not "man made". They exist in nature.

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Climate Change Australia

Oh, Kashi...I am so glad to have some extra time to hear you B) . As I recolllect the singular use of "prime numbers", it's easy to see the importance of space communication. Everyday, I touch base with the realities in my world and the taste that tomorow brings is to my mind...frustrating. And that is why I love and come to this forum. The support of all is inspiring. I so enjoy the views shown. B)

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"Science surpasses the old miracles of mythology."-Emerson

Radio waves are a form of light, so they travel at light speed. A broadcast by Hitler at the opening of the 1936 Olympics is said to be the first signal powerful enough to reach out into space. Therefore we have been broadcasting at a power level sufficient to be detected for 68 years. Therefore only civilizations within 68 lightyears could have heard us, and only civilizations within 34 lightyears could have heard us and replied for their reply to reach us now.

The problem is there is nothing that we know of that can travel faster, so this is the most efficient form of interstellar communication we know to be possible.

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...and we'll be saying a big hello to all intelligent life forms everywhere; and to everyone else out there, the secret is to bang the rocks together, guys...

My opinion,

Any alien life that would use radio, and transmit and recieve from the stars would either understand geometry or have some form of vision on some spectrum or wavelength...

prime number would make a signal stand out from the background, then maybe followed by resolution or encoding numbers to define pictures like TV a signal could hold enough information to start linking to pictures to sound... hence what I'm saying is simple radio could hold no frame of reference but a prime sequence to make it stand out from stellar radio background, while TV encoded radio could communicate and actually relay dialog, concepts and ideas... slowly to our local area of the galaxy only...

any signals are really just a beacon saying we are here and showing that we have a lot of problems such as war, racism and all the nice things one sees on the news each night... signs of a young race with technology and too little experience and unification to work together...

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<span style='font-size:10pt;line-height:100%'><span style='color:blue'>If Time is what keeps everything from happening at Once, and if Space is what keeps everything from happening in the same Place then can Imagination bring it all together</span></span><span style='font-size:11pt;line-height:100%'> - Calibre</span>