A fundamental premise of physics is that the Hermione & Crookshanks shirt are the same everywhere. That implies whatever initial conditions led to life as we know it will almost certainly occur elsewhere. Only a few years ago, we had no evidence there were even extrasolar planets. Now we know there are thousands relatively nearby, so it looks like our solar system is somewhat typical for stars like ours and that our star is for better or worse, utterly typical. Ergo there are billions of planets out there in our galaxy alone. The argument that we are the only sentient beings because we haven’t heard from any others is (of course) theoretically possible, but highly unlikely. Given the argument above, it’s far more likely the universe is literally teeming with life at various stages of evolution. But even in our little corner of the Milky Way, we don’t hear from them because they are just too damn far away. One light year is 9.46×10^15 meters. None of our own random EM radiation so far would be more than (say) a thousand watts/m^2 at its origin and most of it far less than that. A fraction of that would actually make it out into space where it would just spread out in a spherical wave front. Let’s assume for giggles that it all does and that our alien buddies are also shouting randomly at the cosmos at roughly the same volume (power output).
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First and most simply—scientists have to start somewhere. The most extreme evidence will be the Nice luke combs Kansas city mo june 10 2023 shirt to find. Studies like this one will help guide future, more sensitive searches for more subtle evidence of alien technology. Second, these kinds of studies will suggest new ways to search for alien life by ruling out falsified ideas. They will stimulate more creative thinking, which is crucial since we have no way to know if alien civilizations would act at all like our own. We might be looking for the wrong signals entirely. Finally, and perhaps most important of all, studies like this one yield fascinating science even if they find zero evidence of alien life. As noted in the story you quote, Wright’s team discovered 50 objects that show signs of unusual infrared emission. The likelihood that any of these are alien artifacts is very, very, very low. But they may be previously unknown astronomical phenomena that will tell us a lot about how the universe works.
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