Where is the concrete evidence that "Extra Terrestials" have been or are on our planet?
91954
>>>>No one denies that there is intelligent life outside of\n>>>> earth, so I want to hear about undeniable evidence of\n>>>> contact w/ this planet.\n\nYou do realise this is what is called the fallacy of the undistributed middle? It doens't work that way. \n\nI don't that life exists elsewhere in the universe, nor do I deny that God exists, nor do I deny that reincarnation occurs, nor do I deny the existence of fairies.\n\nThat doesn't mean that I claim to have evidence for any of those things. On the contrary I am firmly convinced that evidence for those things does not exist.\n\nBut absence of evidence is not evidence of absence. So I won't deny those things exist until such time as I have eviddnce that they don't exist. I will instead keep an open mind while operating on the assumption that they dont; exist.\n\nThat's how science works. It doesn't just accept without evidence, nor does it deny without evidence.
619767
Von Daniken had some interesting theories.  While I do not believe specifically what he wrote, I do believe that we have been visited by extra-terrestials over the centuries.
673531
No one has yet shown that there is any life beyond that on Earth. \n\nAs far as life in general is concerned I am reasonably sure that there is life on other worlds and there are currently a couple of space missions in development that may find earth-like planets and even find signs of life on those planets in the next few decades.\n\nWhether there is intelligent life out there is more debatable.\n\nConsider that in 4.5 Billion years the Earth has only produced one technological intelligent species. This species has only really been able to consider possibly contacting or being contacted by intelligent beings from another world for the past 50 years. In that time we have just about managed to avoid nuclear annihilation, so far, and are currently well on the way to destroying the Earths eco-system.\n\nIf intelligent life is anything like Homo Sapiens then it will probably not last more than a few hundred years at a level where it is technically able to contact others.\n\nGiven that, it is extremely unlikely that two intelligent species will evolve close enough together to contact each other in the short time frame that they are able to do so.\n\nSo while there may be intelligent life elsewher in the universe I doubt we will ever find it.
54226
To (hopefully) answer the question of how Earth came to be. Sure, we have the "Big Bang" theory, but if you've heard of it, and you're familiar with it, it has many holes. \n\nThey hope to collect samples from other planets to see if there were ever inhabitants there (not necessarily humans, but just some kind of organism).\n\nTo have their names in the history books (fame).\n\nTo see if humans have any other option for a planet to live on, besides Earth (Mars is the only planet that even comes close, so far).\n\nTo see if we can duplicate some of our natural resources, since some of ours seem to be running out (i.e. oil). \n\nTo see if there is, in fact "aliens" or "Martians", or just "anything" out there besides us. \n\nAlso, they say that the Sun is going to burn out soon (I forget how long they said we have). We need to find another source of heat and energy. \n\nIf there were in fact inhabitants of other planets, what was their downfall? Why aren't they around anymore? What can be done to prevent us from having the same fate? What can we learn from that? \n\nAs a side note, I've always been fasinated with this subject. Just think, Earth is part of just one solar system, and we can't even get to the furthest planet (Pluto) yet. There could be millions of other solar systems out there, with people just like you and me, doing the same exact things we're doing right now. It's kind of creepy. \n\nAlso, if you go to Google Earth and you type in your address, you can see a satellite view of your house. The picture isn't currrent or live, but that doesn't mean it couldn't be. I see why people get paranoid about being "watched".
1033409
There are none! Cause the world hasnt even been here that long! This world has only been here lyk ovr 2000 years! Im assuming u eithr believe n evolution or ur jst stupid lol! Cuz seriously y would u think the earth has been here that long! Im not a big god person but sitll god created the world n if it was here 4 more then 180 million years i think he would tell us that! Jst trust me ppl who think our world is that old r jst crazy! Cuz it aint true! Cuz if it was y is our year 2006? Y wouldnt it b 180,000,000!!! Honestly if the world was here that long the year would b that high! N if u dnt believe me then ur crazy cuz ppl who think the earth is that old r jst crazy!
835853
I assume you mean life on another planet since you can see the microscopic life here on Earth with a microscope, which is pretty good proof.\n\nThere is some disputed evidence of fossilized microbes in a meteorite that originated on Mars. Nothing more than that though.
317186
Well it makes sense that there would be visitors from other worlds.  The idea that Earth is the only planet in the whole universe that supports inteligent life is very arrogant, really.\n\nIt is a bit like the notion that the earth is round.  For hundreds of years, people were only aware of there immediate environments and could not embrace the idea that the earth is round.\n\nAlso, it was long assummed that the sun and planets rotated around the earth.  A famous scientists proposed that actually the planets, inluding earth, rotated around the sun.  He was punished for this, and it was many years before "Scientists" finally accepted it.\n\nToday, persons who come forward with evidence of extra terrestrial life are usually labelled insane (or locked away or killed by the powers that be).\n\nHow long will it be before "Scientists" accept this reality??
86848
No scientific proof for Santa Claus (except for NORAD, maybe), contested or otherwise. A large body of contested data proving aliens' and God's existence, and some evidence claiming that God is an alien!\n\n"Believing" there must be a planet out there that can support alien life is not evidence, folks. It's blind faith. Not saying there isn't one, just that no one can say there is yet. And you people pick on religious believers for not having any proof...
648507
UFO (Unidetified flying objects) Some rare sightings and photographs are all what we have to prove this fact of extra teresstrial activities being carried out in our planet
1002388
There are massive amounts of evidence to support the contention that extraterrestrials have been visiting earth for thousands of years, and have greatly influenced humanity's religious history.  I suggest you read a book called "the 12th Planet" by Zacharia Stitchin.  He is a biblical scholar and ancient languages expert.  The first 80 pages or so of the book are very dry, but if you can get through that, it will amaze you!  Most of the stories from the first 5 books of the Bible were actually taken from much older stories, which can be directly linked to the ancient Sumerian culture, 6000 years ago.  The stories of Adam and Eve and the Great Flood are both taken directly from Sumerian stories, for example.  The Hebrews literally just changed the names of the Sumerian gods to Yahweh, and changed the names of the humans involved.  Anyway, a HUGE amount of evidence exists that these "gods" were really just extraterrestrials.  There are descriptions of them flying around in aircraft and spacecraft, of them having battles with advanced weapontry, etc.\n     For those who think this sounds crazy, ask youself this:  How did the ancient Sumerians know about the planets Neptune, Uranus and Pluto 6000 years ago, when these planets cannot be seen without high-powered telescopes, and we only discovered them within the last 200 years?  It would be literally impossible for them to have this knowledge, but they had it nonetheless.  They said that their gods told them all about these planets.  They also believed that their gods were from a red planet that was on a huge elipical orbit around our sun.  That sounded crazy to historians and ancient language experts, until NASA found that planet last year.  It will be back in our neighborhood in about 1000 years or so.\n    So, if the ancient Sumerians' gods were aliens, and the stories about the Hebrew's god are just plagerized from the Sumerians, then what does that mean for your belief about god today?  \n   These are just a few small examples of evidence for extraterrestrials visiting Earth in ancient times.  There are many many other books on this topic, and each is filled with historical evidence.  Some other books include Fingerprints of the Gods, Chariots of the Gods, and the Gods of Eden.\nMost people would rather hear a comforting lie than a harsh truth.  Are you like most people?  Or are you going to do the research and come to your own conclusions?
267002
Yes, I believe in intelligence outside of our own shallow planet. As for UFOs I can say they are real..I have seen many objects both day and night, for all my life. I believe.
168541
The short answer is: \n- - - - - - - - - - - \n\nYes I think it is fairly likely that there is life someplace outside our solar system. I have written a short historical survey, and then summarized some of the reasons behind my answer. They boil down to 2 points:\n\n1. The universe is a big place\n2. Life seems to be pretty common here on earth and start pretty easily. \n\nThe Long answer:\n- - - - - - - - - - - \n\nA. History\n- - - - - - - \n\nThis is a question that people have asked for a long time. The Greek philospher Epicurius (341–270 B.C) speculated that there were an infinite number of other planets like earth, with life on them, in the universe:\n\n“There are infinite worlds both like and unlike this world of ours...We must believe that in all worlds there are living creatures and planets and other things we see in this world.” Epicurius (c. 300 B.C)\n\nThe Dominican Monk and philospher Giodarno Bruno conjected in his 1584 work, "On the Infinite Universe and Worlds", that there were an infinite number of other worlds with intelligent life on them. He refused to recant this and other controversial beliefs, and was burned at the stake during the Inquisition for this. \n\nThe famous physicist Enrico Fermi formulated the Fermi Paradox (sometimes known as the Fermi Principle by skeptics), which states that if advanced intelligent life was widespread in the universe, we would have evidence of it already. Since we do not have good evidence, where are they? \n\nThis was later addressed by Frank Drake with his Drake equation (aka the Sagan equation or the Green Bank equation) for trying to estimate the probability of using coming in contact with an advanced extraterrestrial civilization. \n\nBoth a modification of the Drake Equation and the analyses associated with the Fermi Paradox can be used to try to estimate the likelihood of there being life beyond our solar system (the interested reader is directed to the references). Basically, depending on what is assumed for a number of parameters, it appears either quite likely that there is life outside the solar system, or quite unlikely. However, at least one has a better handle on what the quantitative factors are that go into estimating this probability by this kind of investigation. \n\n\nB. Reasoning Behind my Opinion\n- - - - - - - - - - - - - - - - - - - - -\n\n\nMy own opinion, after having read this material and some of the links contained, is that it is quite possible that life exists beyond our solar system, or even possibly does or has in other places in our solar system than earth. \n\nFirst, consider the very large number of stars even in our own galaxy (200-400 billion) and the large number of visible galaxies. This leads to about 7x10^22 stars in the visible universe (according to  Dr Simon Driver of ANU). This is more than 10 times the number of grains of sand on earth. This is 100 billion times more than the number of letters in the 14 million books in the Library of Congress. If this is coupled with the seeming presence of a large number of exoplanets around these stars (170 found as of the end of 2005, and we have barely started looking), then this translates into a HUGE number of planets. With this extremely large number of potential planets, there are bound to be some like earth. \n\nLife seems to thrive readily, since life started soon after the earth cooled and existing in environments that we can barely imagine, like miles underground, or near deep ocean vents, or under the Antarctic ice. It has been well known for years that there are amino acids, the building blocks of life on meteors in space. Scientists have also created amino acids in environments similar to deep space environments (see reference). The Miller-Urey experiments in the 1950s were also able to readily create amino acids in environments meant to duplicate a primordial earth environment (reference below). \n\nWith the evidence that there are probably many planets with eart
724199
So far we've seen no verifiable evidence of other sentient species. That said, I believe with some certainty that somewhere in our galaxy at some past, present, or future time, a sentient species did/does/will exist.\n\nWhy haven't we heard from them?\n\nPerhaps they are not technologically advanced enough to be heard. They may be mastering stone knives right now, or experiencing their own Rennaisance.\n\nPerhaps they are here right now. Any species sufficiently advanced to travel interstellar distances would be able to hide or masquerade with ease. That Boeing 737 that just flew by may be a surveillance craft.\n\nPerhaps they are so far away they will never notice us and vice versa.\n\nPerhaps they existed a million years ago and died out.\n\nPerhaps they will exist a million years from now.\n\nIt is really impossible to know for sure.\n\nThe Drake Equation suggests that there is sentient life out there. The Fermi Paradox casts doubt. Play around with the calculation form at the second link and see what you think.
707999
No, there is no evidence to suggest that. Even if humans destroy themselves, the planet itself will still be here. Earth has another few billion years left.
514481
If you're talking about the "tracks" in Paluxy river, Texas, these have been around, and been debunked, since the mid 1970's.  Even many creationist sources now recognize that the footprints are bogus.\n\nHowever, some creationist web sites and books *still* trot these out, decades after they've been debunked, as "evidence" of the co-existence of dinosaurs and humans, even though the overwhelming evidence is that they went extinct 65 *million* years before the first humans appeared.  \n\nIn other words, any source you see that brings up the Texas footprints is *not* the place you want to going for scientific information.
5535
No..but if you are lucky enough to actually witness their technology..: UFO/disc/sphere/..etc..it certainly closes any doubt involving the questioning of the existence of extraterrestrials. I have been witness several occasions..day and night to objects in the sky..I certainly wasn't looking for them..I just happen to look up at the right times..but perhaps in the near future if we are lucky ..we can get more governments throughout the world to come clean..and fill us in..on what many believe and some even know...that we are not alone..here or the universe
455827
Because of the great distances involved, the most reliable way we have to look for aliens is to search the sky for the different forms of electromagnetic radiation that a technologically advanced society might generate, such as radio waves.  SETI (Search for Extra Terrestrial Intelligence) does just this, looking for anything that might be interpreted as signs of intelligence in the background noise that otherwise permeates the universe.  Nothing conclusive so far, but absence of evidence is not evidence of absence.  With the universe as unimaginably large as it is, odds are something is out there.