No branch of sciene would consider what we so far have to be proof of anything. I trust we will keep looking.
Detection of bio-signature gases on Earth can be found much longer than 100 years...like oxygen. It won't necessarily lead to intelligent ET's but will get the hearts pounding at SETI. If we're only talking detecting radio waves, on Earth they have been present ~100 years, but on an ET planet that had radio wave technology maybe for hundreds/thousand of years, a SETI search from Earth can be looking at greater distances than 100 years. Maybe we can detect some oxygen or other ET signatures, from a planet 500/1000 years ago? I agree ET won't find Earth's radio waves beyond 100 years but humans can search longer distances assuming ET's have been around for millennia...
Yeah, but the question is "do aliens know we are here." Not "is it possible for us to find aliens." I'd assume that they don't because of the incredibly short amount of time we've had technology for them to detect.
Science isnt even looking at it. But then that would require our military releasing all documemts detailing contact with craft over decades and instrument data owned by our military. Most classified. Not. ..gonna...happen .No one would fund it .
The one indelible thing I've learned from the Trump era, is that there are always a minority of people out there who value neither evidence nor truth, regardless of the topic or subject. It has been a sad & jarring lesson.
However, "Gov't" includes members of the Kabal who threaten the lives of family members when individuals in key positions offer to give valuable support to the disclosure project, causing them to withdraw their involvement. There was a British scientist, a top expert in the field that included knowledge of biological weapons who sternly opposed the official claim that Iraq/Saddam Hussein had such WMDs. He said the establishment was out to get him. It did. His death was officially ruled a suicide (despite the fact that he supposedly shot himself in the face twice).
Very unlikely We only beamed out radio signals last 75 yrs and that is only 75 light yrs away Aliens may have scooped out this area (pre dinosaur), then moved on
IMO ET's are dealing with the same issues Earthlings deal with regarding space/time issues. I have no problem guessing that ET's or other lifeforms exist across the Universe, but I don't believe there are extraordinary physics we don't know about, that allows ET's to travel the Universe. I can also assume that if it is possible for ET's to travel the Universe freely then they also possess whatever technology to know that Earthling's exist. And like I said, technology is not the only signature from Earth that tells ET's there is a high potential for lifeforms to exist...like bio-signature gases which have been around much longer than 100 years...
But if life is common, but intelligent technological life is not, bio-signatures may not even be that interesting. Or more likely there are so many stars to explore close To them that they haven't got here and have no particular reason to come to earth. Also people think the math favors there being intelligent technological wielding aliens close enough to come to earth. I'm not sure about that at all. A space faring species (us) only arose once in 3 billion years of life being on this planet. That would seem to imply that such an event is extremely rare. Given the billions of species that have existed on earth. There are 150 billion stars in the milky way (other galaxies are simply too far away, no matter the technology) even if 1 out of 10 stars had life and the 3 billion years is at all typical (we have no way of knowing at all on any of that) then earth level technology on 5 stars in the milky way in the entire history of the milky way. So the chances that such civilizations would be at the same time AND close enough to communicate. That drops to 1 in billions. So some people seem to think that numbers favor alien civilizations being out there, but given how few species have developed civilization here, I think just the opposite is more likely.
I suspect full knowing that lifeforms exist on another planet will be a very exciting and interesting event. The only way ET's could casually visit Earth is if some extraordinary physics exist to allow such travel. If this did exist, ET's will be traveling all over the place, to every corner of the galaxy. 'They' would visit simply because they can and won't need any reasons. Don't know how 'math' can favor the existence of ET's? 3 billion years does not make it a rare event...it's just the time factor. If you wish to use statistics to justify ET's they will merely be guesstimates. We simple do not yet know. The vastness of space/time, with our current knowledge, does not allow us to know much. We can guess, we can speculate, we can hope, etc.
Good points. I wonder how long it would take to explore the 35 galaxies (many minor) within 1.5 million light years using the physics we know. Perhaps a spacebot could be made capable of duplicating and/or refueling itself on asteroids. Given billions of years, a growing fleet could span out quite far, maybe. The fleet growth rate would be pretty small at the outset.
Astronomers estimate there could be 40 Billion Earth-size planets located in the so-called 'habitable zone' and this is just within the Milky Way Galaxy. When searching for bio-signatures, they must first be detectable, they must be determined reliable, and can they survive? Detecting bio-signatures on hundreds of billions of exoplanets, including microbial life at a minimum, will surely be a daunting task on it's own. Then each bio-signature found must be evaluated for being an actual byproduct of life. Finally, bio-signatures found will need to be monitored over time to know they can persist in their environment. I certainly don't know the answer how long it will take to explore? Seems the effort is worth a dedicated telescope and perhaps using AI to do all the work? Unless space craft can travel closer to the SOL, seems SETI work can be performed from Earth. Even with SOL travel we're still talking about millions of years...
We've had a couple space based telescopes that have identifie more than 4,000 exoplanets. The EU has a couple missinons scheduled for the next couple years and are dedicated to telescopes that should be able to investigate these planets for signs of life that can be detected remotely. It takes special work, as these planets would be near or in front of stars that are obviously far brighter than the planet in question.
Probably far less. We've been experimenting with radio since the late 1890's but the vast majority of Earths modern radio emissions don't escape past the ionosphere. (Same goes for TV of course which is probably a Godsend given the picture our TV broadcasts would give of life on Earth.) In between that start and now there have been a few, brief emissions that would have been detectable by any nearby aliens including things some experimental long wave radar broadcasts in the 70's (I think) plus some other stuff relating to deep space communication. All of which were more or less random and transitory. And even those emissions were so weak they would be all but undetectable much past 100 light years - and that's by aliens with better tech than we have right now. So if aliens want to know we are here without doing a random fly by visit, their best bet is to use astronomy to detect the Earth in orbit around the Sun and analyze its atmosphere. That will tell them there is life. If they are really good they might even be able to detect some of the man made pollutants we have released into the atmosphere and note they could only have been 'manufactured' by industrial processes.
YES exactly !! They can tell by the chemicals and elements but they still have to contend with the speed of light. So it may take them hundreds, if not thousands of years to reach them
So you are saying the military evidence is not enough to get academia to research it? These craft are made of matter and exist. Much evidence for that. These craft are more advanced in many ways as evidenced by their performance. The question is why have scientists not been interested?
The military has many scientists and real live access to any existing data or individuals. Also, it's a topic that should be of extreme interest to the military. They don't blow off unknown creaft in our airspace. If they aren't doing the research, then I don't know why anyone with less access would decide that the military assessment needs to be investigated.
It's amazing to me the accuracy required to not only detect, but also measure, stuff light years away! Looking for biosignatures is even more daunting since I believe they look at light reflected from lifeforms like plants. Doing all of this with a bright star in the window doesn't help...
Yes - I think one of the big advancements is the ability to block the starlight while capturing the light that is as close to the star as a planet. So far we've found a lot of exoplanets. It will be interesting to see the results of satelites designed to examine them. Fortunately it looks like the best of them are coming from Europe, where Trump-NASA isn't likely to suck funds for flying humans around space.
But, often lost on many, is the assumption aliens have progressed in developing technology with a similar history trajectory as our, but have exceeded that of our and are curious enough to look for us which tech that can detect us? What are the possibility’s of life in the universe against that life having the same life conditions, and environmental factors that would result in similar natural selection paths for developing tech, as a survival strategy as we have. Dolphins and whales appear to have language, exhibit what can be interpreted as culture, and far more attributes once thought to separate them from what makes us human and while humans have leveraged technology as a strategy for survival, can it be said they are not as well adapted to their environment as humans in the sense of Darwin’s ‘natural selection process’ or even that of many viruses and types of bacteria. Humans tend to project human emotions, interests, and desires on aliens just as the have on their visions of God, Gods, and spirits for eons and across cultures. Humans have a tendency to anthropomorphize animals, aliens and Gods as if we are somehow the baseline for measurement life.
How about we have craft that look to be magical and the natural curiosity of scientists in academia are not intetested and if they were who would fund it?
I'm not sure exactly what you're asking here. Most funding of research comes from federal programs, which are totally underwater with strong research proposals. It seems logiical to decie that if anyone should research this magic, it should be the Airforce. You say we have craft, but I would disagree with that. If we had creaft that would be a whole different issue.
We have nothing else to base it on really. We should be open minded enough to imagine life from another world much different than humans. Giant crayfish maybe? Or an insect like being that could move dirt like heavy machinery? Or an invertebrate like a Dragonfly or beetle? Or a goat with a giant intellect? Or an alien life form that is busy eating each other when it isn't eating us? It could be a natural trait that brings them here rather than technology. Space bacteria perhaps? Meaning they would take us down without technology or intelligence saying neither technology or intelligence amount to a hill of beans as far as the universe is concerned.
