Originally posted by sign00
Sorry if this has been posted already. I looked for it and couldn't find any reference.
Basically SETI is looking for patterns in the electromagnetic waves which are passing Earth. Right?
Natural radiation will be random, which will give it around a 3% repeatable pattern on average.
So if you get a signal with a 15% pattern over a reasonable period of time then you can assume this is a real alien signal, right?
But any alien civilization with even a tiny degree of technology uses compression. They compress their files. They compress their data. We do it. Analog TV and radio is becoming a thing of the past already and we've only managed to fly to the moon. There's only a few year gap where a civilization invents the radio but not yet compression, and a civilization like this is not very advanced (since compression algorithms are not that complicated.)
So the aliens will of course have very good compression software. In which case there will be exactly 0% patterns in their transmissions. Literally 0% because compression software works by removing patterns.
So instead of looking for patterns, SETI should be looking for NO PATTERNS.
Originally posted by littlezeta
hi i dont believe a word seti says
to think advanced ets wud use radio technology is laughable
they are a government puppet just like nasa
A quasi-stellar radio source ("quasar") is a very energetic and distant active galactic nucleus. Quasars are the most luminous objects in the universe. Quasars were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that were point-like, similar to stars, rather than extended sources similar to galaxies
Quasars show a very high redshift, which is an effect of the expansion of the universe between the quasar and the Earth. They are the most luminous, powerful, and energetic objects known in the universe. They tend to inhabit the very centers of active young galaxies and can emit up to a thousand times the energy output of the Milky Way. When combined with Hubble's law, the implication of the redshift is that the quasars are very distant—and thus, it follows, objects from much earlier in the universe's history. The most luminous quasars radiate at a rate that can exceed the output of average galaxies, equivalent to one trillion (1012) suns. This radiation is emitted across the spectrum, almost equally, from X-rays to the far-infrared with a peak in the ultraviolet-optical bands, with some quasars also being strong sources of radio emission and of gamma-rays. In early optical images, quasars looked like single points of light (i.e. point sources), indistinguishable from stars, except for their peculiar spectra. With infrared telescopes and the Hubble Space Telescope, the "host galaxies" surrounding the quasars have been identified in some cases. These galaxies are normally too dim to be seen against the glare of the quasar, except with these special techniques. Most quasars cannot be seen with small telescopes, but 3C 273, with an average apparent magnitude of 12.9, is an exception. At a distance of 2.44 billion light-years, it is one of the most distant objects directly observable with amateur equipment.
Originally posted by MyPathManifests
Then there would be no way to discern the radio noise from stars and various other natural phenomenon in space. You are basically saying there is no way to pick up and then interpret any foreign sentient radio signals. Besides that, with the technology were working on today, soon radio signals will be a thing of the past.
Scientists Measure Communication Between Quantum Intangled Atoms
edit on 25-3-2011 by MyPathManifests because: (no reason given)