Do extra terrestrials exist?
473205
ahhhh the holy grail of questions... do extra-terrestrials exist.  Well, I would have to say yes.\n\nKeep in mind Earth is like a grain of sand on the beach. It would be extremely hard to find anything.  Here is a cool link to check out...\n\nwww.seti.org\n\nthere is actually an equation to figure out if there is life elsewhere. click 'center for study of life in the universe' then scroll down to where it says 'drake equation.'\n\nFun stuff!
1131239
yes of course there are other aliens and such that we dont know about. why would god just make us and not anything else. they do exist.
25028
I am almost 100% certain that life DOES exist on other planets, and may be in completely unfathomable ways, that we could not begin tio understand.\n\nIt us very interesting that the prospects of life having once existed on Mars are become more likely, due to the significant discovery that water once was in abundance there.\n\nThe trouble with finding life in other solar systems is that the distances are just too great. Even radio waves take 4 years to reach the nearest star from the Sun, then you need 4 years for the reply. The majority of stars are MILLIONS of light years away. so EVEN if there are a Billion planets with intelligent life there is no way of being in contact.\n\nBUT I do hope I will find out that DEFINITE life has been proved to exist before I die.\n\nI find this a fascinating subject.
986050
I think you were watching a sci-fi show, maybe artist's conceptions of planets in other systems. We can confirm that the other planets exist by watching for gravitational anomolies but our tech isn't up to the task.
746941
No.\n\nSo 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 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.
368791
Are Humanoid aliens real?  Are Silicon-based aliens real? Are Methane-based aliens real?\n\nIn science fiction, anything is possible.  In real life, we have not encountered these beings yet.\n\nReptillian aliens are possible, but I would assume that alien beings evolved in different ways that life on earth, so there might or might not be any remote similarities......
896421
Hi\nYes there are. There has been microscopic animals found in mars.
1098860
Using mathematics to determine the chances of life elsewhere in the universe, one estimate determines that there are approximately 10^75 advanced societies.  If true, then it is very likely that there is life beyond earth – even advanced life forms.\n\nSteve\n:-D
979405
The question is twofold and most responders missed that. To my knowledge there is no scientific evidence of aliens visiting earth space.\n\nBut there is plenty of independent scientific evidence of UFOs. The UFO phenonena has been studied at great length and there is evidence that something comes and goes and that that something operates intellegently.  But we do not know what they are.  \n\nMy personal opinion is that there is likely life somewhere in the vastness of the cosmos.  But I can not believe that life visits earth regularly each and every day all over the globe. So the UFOs may or may not be alien.  But highly unlikely.
624219
Yes, it's like impossible for aliens not to exist. The universe is too big for there not to be at least something else.
36493
Extra-Terrestrials\nALIENS
34051
Personally I think the answer is "there aren't any," but there are some people who have made quite large lists of Earth-bound aliens. Note: these people often tend to think the Queen of England is a Reptilian, so keep that in mind.\n\nBasically you have the greys, reptilians, nordics, and those that look - and pass! - as humans. Or so they say.\n\nAnyway, here are some lists:
1126911
I believe there is life other than on Earth. Even if just mathematically!\nAn interesting point though, is that the authorities on this field have concluded that the nearest system that COULD support life is Sirius. That's interesting, because throughout history, the more believable tales of alien contact seem to all point to that star system. The Dogon tribe are a classic example of that. They apparently knew of Sirius A and its two companions(Sirius B and Sirius C) long before any 'civilised' society. Sirius C has yet to be discovered, but could well be there! I quote from Wikipedia: "Apparent orbital irregularities in Sirius B have been observed since 1894, suggesting a third very small companion star, but this has never been definitely confirmed." \n\nAs to us being Parasites on this Living Planet, I couldn't agree more.
820032
If you mean aliens that have visited Earth then NO.  Sci Fi bullsh*t that deserves no airtime at all.  If you mean the existence of life on any planet anywhere in the Universe then undoubtedly it does exist.
1117486
don't the already exist?
107588
yes, they -or it- exists as u can see nasa found germs,bacteria,exstinct polar ice caps, and even a fossil of a "human" type face on mars! so yes the exist!
510120
Currently, we conclusively know of no such thing.  The majority of the scientific community thinks it unprobable that there ever was such a thing.\n\nIt is not an entirley impossible concept.  We see stranger things in nature.