SETI is a very high tech institute in America that focuses on what is called "Astro Biology". This may seem strange as there are no living creatures in the universe, except on earth of course. Even if there is, we haven't found any. Bit ridiculous to name a whole branch of science for something that we have zero (0) nada, niks, zip evidence for. Don't we have enough problems to throw money at here on earth than to study things that we can't see, feel, measure, or...even name? I take crypto zoology more serious, there is a chance of finding a Yeti.
Anyhow, that is a different matter. What I am interested to know is how would SETI (Search for Extra Terrestrial Intelligence) even know if they have found a "intelligence". What are they looking for? How will they tell a signal from an intelligent being from the vast ocean of radio waves created by stars, black holes and other celestial objects?
Even if they do say they have something, how would we know for sure, if you manipulate the data from a heap of sand you could probably get a pattern. How will they tell a signal from an intelligent being from the vast ocean of radio waves created by stars, black holes and other celestial objects? Cheerio