Do you believe Aliens exist and have been visited the earth?

The genetic structure of earths life is pretty well understood. If aliens from another planet, came here and were involved, it should have disrupted the change, since being like ours, would have been highly unlikely.

As for billions of years ago, if there were visitors...they could have died out, probably from simple virus infections, which is why I believe no intelligent society, would ever last long elsewhere (from their planet) in either this solar system, the Galaxy or the Universe.

 

That statement is totally devoid of intelligence

Beam me up Scotty, no intelligent life forms down here.

I remember back when I used to read the Dick Tracy, comics. I wanted a watch like he had, and told my grandpa that once I get grown, someone would have invented one. He told me it was impossible to have something that small that could be used like a phone. I wish he could have lived to see it happen.

There was a physicist, before the founding of quantum mechanics and physics that said we had all of the knowledge in physics and we should just accept that fact, as Newtonian, classical physics could explain and bring understanding of the universe. LOL A physicist said this. So while he could crunch numbers, this dude was lacking real intelligence. Even scientists can be as dumb as a bag of hammers.

 

I don't know, that's my answer. I don't know if aliens exist and I don't know if they've visited us. None of us do. It's likely, more likely than not even, that life exists on other planets. It's also not entirely unreasonable that they could be among us now. But we don't know for sure.

 

That impossible engine copied by NASA is breaking a law of physics. Laws only stand, until they don't. LOL

Some brains, are encased in hardened concrete. Always been a human problem.

 

What you mean is when you see them, many of us, not I, have seen them. When we go to explore Galapagos, we don't try to hide from the inhabitants of the island. If their technology is so farther advanced than our own, they're not going to be afraid of us and have no need to hide at all. Why would they need cloaking devices? And we're far from stupid.

 

Time travel is impossible.

 

All polls should have the "other" option. I didn't answer.

So-called aliens are humans from the future doing anthropological investigation of ancient species. This is why all reports of aliens given them basic human shape and form - 2 eyes, two arms, two legs etc - a one in 100 trillion chance to just happen to evolve that way on another planet.

Unless humans become extinct, it is inevitable. Generic manipulation clearly would allow manipulating the human species towards more powerful brains and certainly computers will evolve in radically. The theory of time travel backwards already exists, just no technology to do so. In short, future sapien species will inevitably explore past species, just as we explore prior homo sapien species ourselves. This is SO obviously that it is only the fascination with "alien" species and life on other planets that this obviously logic is never mentioned.

Nor would they have any interest in "helping" us, anymore than we help monkeys we study in the wild, trying not to disrupt what they are doing.

It is just bizarre to think that human-like species could travel from centuries of light years away, but that humans of the future will never be able to visit their own past. In fact, unless humans are wiped out it is inevitable. It's only a matter of time.

 

I was abducted back in the '60's.....I know they are real.....I made love to one of them, and now we have a child...

 

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Time travel has already been accomplished, but only for milliseconds backwards in time and the port has to be built first. Time is relative to mass and speed. It can be manipulated.

 

I'm just going to guess that if Trump could make millions, he's far from stupid.

 

Really? How is life created, how does it start? If you cannot even answer that about our own planet, how can you possibly claim "it is impossible for life not to exist in other planets"? The size of the Universe is not an answer.

 

Odds are, there's plenty of life out there.

Odds are, it's too far away for introductions of any kind.

 

I believe Hilarybeast is an alien....are a Lesbian...

 

But what if there is someone on another planet somewhere saying the same thing you just said ?

 

What better proof could you ask for than Glarzwix, from Albumetrol, in comfortable residence atop his head?

I think Aliens have been here since far antiquity, like back in caves. They don't "run" things unless they have some passing reason to because neither we, nor our planet, could possibly have anything they could not obtain far easier somewhere else. We're a curiosity, a side stop or backwater. Maybe Zambezi falls or the Great Rift Valley attract a few knowledgeable tourists, but I doubt it.

 

I never think anything is impossible in this world. Everything is possible and of course there may be other inhabitable domains in the universe since this planet is one of the million other planets and since we do live in this planet why there no aliens in other planets. There are possibilities evidently.

 

The possible existence of life on other planets cannot be tied to how life is created here nor there if there is a there there. We at one time until what just 15 years ago did not know if there were even other planets out there. Now we do not know for sure exactly how planets are created. We have speculated. So before other planets were discovered if I said with the billions or gazzilioins of stars out there there "has to" be other planets. You would say but you don't know exactly how planets are created so how can you say that they is a high likelihood of other planets out there.

 

Everything is pure speculation or perhaps SWAG's, scienctific wild a-- Guesses. What we have been looking for as far a life is concerned or speculating on is that the alien life form will be similar to us and our planet. We assume if there is life out there it will be like us, it will be carbon based. It may not be. Just because life takes its form here doesn't mean it has to follow that form on other planets where ever they may be.

I know, this sounds wild. But we are limited by our knowledge. But everyday that knowledge expands. I do find the subject or question of aliens or ET's visiting earth interesting.

 

What exactly do you mean by aliens though? If you mean little green space men who anally prove people they kidnap, then no I don't believe they exist at all.

If however you mean bacteria and such in space, then something definitely has to exist out there but it unlikely they are as intelligent as humans on Earth.

 

I have no illusions that life out on another planet assuming it exists may and probably will be very different from us. Or if similar or somewhat similar they very likely do not communicate like we do. I get a kick out of this SETI search listening for radio signals. Who is to say that other intelligent life forms used, use, or will use radio signals to communicate. Or they di millions of years ago and have moved on to more advanced technology. Who knows maybe advanced life forms figured out how to use subatomic particle for communication and we are not there yet. Maybe they cross dimensions. Sounds impossible but radio signals would have been incomprehensible for caveman Gabog and his wife Boomoonga...

 

That's just one small piece of the puzzle, and that's actually the only parameter value which has any scientific basis although a weak one.

 

Actually, we do know how planets are formed: when gravity pulls together debris in the planetary nebulae surrounding young stars and this ball of debris accumulates enough mass to pull itself into a spherical shape and clear its orbit around its parent star, we have a planet. Now, obviously we don't know this empirically from observing the formation of a planet because the timescales involved in the process of planetary formation are far too long for that. But there are plenty of young stars with planetary nebulae in the galaxy and plenty of young solar systems with just-formed, molten planets, and our - well, astronomers' - observations of all of this have led us to a conclusion about how planets are formed.

That said, you're right about the probability of extrasolar life. It's highly unlikely that Earth is the only place in this enormous Universe which is habitable, especially given how many potentially habitable exoplanets have already been discovered by Kepler, WASP and so on.

 

One need only look at the diversity of life on our own planet to understand that HUGE possibilities exist for many, many different "Life" forms amongst the unbelievably vast cosmos. It also takes very little understanding of time and distance to realize the very slim chances that this life would just happen to find our little needle in the giant haystack during the microsecond (relatively) of our existence.

I suppose it is possible that somebody did so or are doing so right now...but the likelihood is almost Nil.

 

Exactly, my thoughts too on the radio signals. Perhaps they, the aliens found a way to fold both space and time. Who really knows what is possible and what is not. We are limited by our knowledge to what is possible or not. As we gain knowledge, more and more things, advances become possible. We could find life out there or the life out there could find us and neither one would pay any attention to the other because we and they are so different and life means different things that neither recognizes the other as life.