what do you think may change on are earth if we were to find aliens?


for me i think that the aliens might share there tech with us and the earths tech would be boosted thousends of years.

I've actually had the scenarios run through my head many times.
Well, three scenarios to be exact, because the way I see it, our discovery of alien life will happen one of three ways and I'm fairly confident it will happen in my lifetime.

Scenario 1:
- SETI detects an artificial radio source that's independently confirmed around the world.---
I think this scenario would have a powerful impact on our culture and how we view ourselves. While many people already generally believe that there are intelligent aliens out there, a successful SETI detection not only confirms that they exist but that they want to communicate with us. It would be a dramatic discovery, but I don't see how we could immediately learn anything more than where the signal comes from and what the signal looks like. I believe that in the media coverage following the announcement, there would likely be a few scientists and talking heads who will claim that the signal is either fake or can be explained naturally.

If a message or some kind of data is encoded in the signal, I'm fairly confident that whatever potential data exists within it would become one of the great mysteries, possibly *the* great mystery, that mankind is presented with; scientists, "experts", enthusiasts, and average people would struggle to decipher whatever data might exist......and I tend to believe that they would not succeed, not within my lifetime at least. Keep in mind that Egyptian Hieroglyphs were one of the great unsolved puzzles of civilization until the Rosetta stone was discovered.

Scenario 2:
- One of our telescopes detects an unmistakable biosignature in the atmosphere of an Earth-size world orbiting a distant star---
- The James Webb space telescope may just be the telescope to do this some day in the very near future. This discovery may be the most likely of the three and possibly the soonest to occur....maybe even within the next 10 years. Spectral analysis of the atmosphere of an Earth-size world with life would reveal a level of free oxygen comparable to what we have here on Earth. For such a degree of oxygen to exist in the atmosphere of a terrestrial planet, the only natural explanation that we know of is life.

If this happens, it will be an *indirect* implication that life exists...and there will undoubtedly be scientists straining to come up with alternative theoretical models to explain makeup of that atmosphere without life as a necessity....
The planet will be the object of intense study and scrutiny...but because of its distance, we will likely never be able to know more than its atmospheric makeup within our lifetimes. Hence it will remain a controversial subject, though many will accept it as indeed the first detection of alien life.

Scenario 3:
- Discovery of living microbes or fossils on Mars/Europa/etc, within our solar system---
- This seems plausible if not likely given what we know about Mars and Europa, but a confirmed detection of life would seem to require a manned mission to Mars, and a Europa ocean probe seems a long way off. Nevertheless, when it happens, it will dominate the news cycle and change the way we view ourselves. Unlike the first two scenarios, this discovery would be a concrete and unambiguous confirmation that we are not alone. While microbes aren't necessarily as exciting as intelligent aliens, the fact that life arose *more than once* in the same solar system would have broad implications; it would imply that life, at least microbial life, is likely ubiquitous throughout the universe.