Why the Ancient Astronaut theory may not be right

[vmatt2000]

Where did they come from? ok, these ancient guys are supposedly human like, which means they must have come from other earth like planets. There may be several earth like planets in the Universe. Looks like they came in what looked like modern day space ships. At the rate of 20,000 miles an hour, you could travel from earth to pluto in 20 years. With the newest probe New Horizons from NASA, it may take 10 years.
So, these human like forms should spend at least 20 years coming to earth and going back to their planet, if another earth existed in our solar system. Since there is no other earth in our solar system, it is reasonable to assume that they are from even farther earth like planets, making it even longer than 20 years to go back and forth.
Assuming these human like forms have a limited life span, why would anybody spend 20-30 years of their life time to come to earth and go back?
Also, why do we not see anything from THEIR world, and only things from OUR world DEPICTING what earthians saw?
How could they have communicated with people thousands of years ago, assuming they were far advanced and we were very primitive? How many people speak sumerian or aramaic now? Languages are lost over time. Not only that, try talking light year to a 3 year old, how would the ancient astronauts even make our primitives UNDERSTAND science?
I would appreciate any responses to this...
VJ.

[cRush]

Where did they come from?

There are many suggestions on where they came from, including our planet, other planets, other solar systems, other galaxies, other universes, and even other dimensions. None can be disproven since the aliens themselves cannot be proven.

ok, these ancient guys are supposedly human like, which means they must have come from other earth like planets. There may be several earth like planets in the Universe. Looks like they came in what looked like modern day space ships. At the rate of 20,000 miles an hour, you could travel from earth to pluto in 20 years. With the newest probe New Horizons from NASA, it may take 10 years.

20,000 mph is the escape velocity speed the Space Shuttle reaches to leave Earth's gravity (well actually ~25,000 mph). I'm unaware of any of the AAT evidence suggesting that ancient astronauts traveled in Space Shuttle type vehicles to our planet. Furthermore, you are assuming that these aliens level of technology was on par with what ours is today. In all reality, it would have had to have been far greater; this is one of those things that has to be taken for granted if you are looking to validate the AAT.

So, these human like forms should spend at least 20 years coming to earth and going back to their planet, if another earth existed in our solar system. Since there is no other earth in our solar system, it is reasonable to assume that they are from even farther earth like planets, making it even longer than 20 years to go back and forth.
Assuming these human like forms have a limited life span, why would anybody spend 20-30 years of their life time to come to earth and go back?

We don't know the lifespan of these life forms. It could be hundreds or thousands of years. Maybe longer. Perhaps they do not experience physical death as we do. When pursuing the AAT truth, it's not necessary to understand how long they lived, or if it was prudent for them to travel to our planet. Likewise, since we know very little about them, we can't begin to understand their motivation for coming, nor for leaving.

Also, why do we not see anything from THEIR world, and only things from OUR world DEPICTING what earthians saw?

I'm not entirely sure what you mean by this, but I'm assuming you are asking why we don't find any ancient alien artifacts lying around. It is possible that the ancient alien visitors came to our world with very little other than their spaceships (which they took with them when they left). They might have had a few tools, but probably guarded them closely because they would have been extremely valuable and necessary for their survival during their stay on our planet. They most likely took advantage of the resources on the planet while here, thus we find only those things from our world. Some argue that objects such as the pyramids are actually ancient alien structures that have purposes which we simply overlook because we cannot fully comprehend their intended purpose.

How could they have communicated with people thousands of years ago, assuming they were far advanced and we were very primitive? How many people speak sumerian or aramaic now? Languages are lost over time. Not only that, try talking light year to a 3 year old, how would the ancient astronauts even make our primitives UNDERSTAND science?

How does a deaf man learn to write (and speak!)? How did the Spanish teach the Mayans and Aztec their language? How do you learn English when you are growing up? It would be no harder for an advanced alien race to come and teach primitive humans the knowledge of language. Likewise, upon gaining the ability to intercommunicate, we would quickly advance technologically, which is exactly what happened. Whether language was given to us by aliens or by our own invention, it is evident that it spurred a technological boom.

Lastly, if history and religion teaches us anything, it is that our ancestors didn't understand science. Whether or not the aliens attempted to teach our ancestors science is up for debate. All we know is that our ancestors perceived these acts as magic, and thus, developed a fear of these "gods".

Welcome to the site!

[vmatt2000]

cRush, thanks for your reply.
Agree on the teaching language part.
On the science part, even if Einstein sat down with me and explained how relativity works, I wouldn't get it. So, you're right, our primitives may have just thought that it was magic! To quote "Any sufficiently advanced technology is indistinguishable from magic. Arthur C. Clarke"
On the other parts of your reply, there are two approaches to this- one, take a reasonably probable, some what scientific in what we know so far and extrapolate that. This is evidenced by the Ancient Aliens show on TV showing artifacts resembling a man in a space suit, a plane, and legends of Loud sound, fire, when the Gods came, all of which point to a technology we currently possess, which the ancient astronauts had thousands of years ago. We do not have any other artifacts, resembling any other modes of transport, etc...
The other approach is to border on the mystique, we don't know anything about these people, how they travelled, why they came, and so on, which is essentially the approach taken by our primitives in calling them Gods.
I guess we can pick one or the other...
VJ

[cRush]

cRush, thanks for your reply.
Agree on the teaching language part.
On the science part, even if Einstein sat down with me and explained how relativity works, I wouldn't get it. So, you're right, our primitives may have just thought that it was magic! To quote "Any sufficiently advanced technology is indistinguishable from magic. Arthur C. Clarke"
On the other parts of your reply, there are two approaches to this- one, take a reasonably probable, some what scientific in what we know so far and extrapolate that. This is evidenced by the Ancient Aliens show on TV showing artifacts resembling a man in a space suit, a plane, and legends of Loud sound, fire, when the Gods came, all of which point to a technology we currently possess, which the ancient astronauts had thousands of years ago. We do not have any other artifacts, resembling any other modes of transport, etc...
The other approach is to border on the mystique, we don't know anything about these people, how they travelled, why they came, and so on, which is essentially the approach taken by our primitives in calling them Gods.
I guess we can pick one or the other...
VJ

They could have used rocket powered vehicles just for leaving/entering our planet's atmosphere where they docked with an orbiting mother ship. More extreme, the ships could be powered by some type of plasma substance that resembled fire, and thus was portrayed as fire in early depictions. The space suits look very much like the generic NASA astronaut suits we are all familiar. They could also pass as HAZMAT suits. It certainly seems like a more plausible explanation than attempting to explain the outfits as some sort of stylized clothing.

I believe that the ancient astronauts would have highly advanced aerospace craft, and our ancestors described it to the best of their knowledge. Fire was one of the most prominent, scientific breakthroughs of the time, and was still regarded as highly magical. It is no wonder that they would attribute it to any type of light producing technology.

[Buzi-Blu]

Don't forget the time dilation effects experienced by the traveller, which allows almost any distance to be within reach. This was covered in an earlier thread on wormholes, but Pons Asinorum also made calculations on the relativistic space travel.

http://www.legendarytimes.com/forum/viewtopic.php?f=2&t=3642

This site has a table of examples of time it takes to cover certain distances accelerating at 1 g.

http://www.weburbia.com/physics/rocket.html

[Sunrisepony]

We can't hold them to earthly technology, and time frames, and physics laws. Some of the species out there are hundreds of thousands of years further advanced than we are, they have vehicals that take them into Hyper-Space which likely takes about maybe a few hours tops to get from earth to pluto. A good comparison would be warp drive theory, they have also worm holes and star gates, which can transport not only through long distances in space, but also time. Time, Space and Thought are not the separate things they appear to be. And, the probability is that they've long mastered FTSP travel. There are even ones out there that are likely millions of years far more advanced than earth, and the possibilities of what they are capable of is unfathomable at this point, our minds are not even capable of conceptualizing all of it. I think it was the Pleiadians that had somewhere along the way mentioned that our current laws of physics are archaic and they've long long ago over come those. They come from all over the universe, and other universes and dimensions.

[cRush]

I think it was the Pleiadians that had somewhere along the way mentioned that our current laws of physics are archaic and they've long long ago over come those.

Wait, did the Pleiadians hold a press conference to announce this, or did you speak with one personally?

[vmatt2000]

They say we were created in their likeness, or atleast, they were able to bear children with humans, or inserted their DNA into us, and so on and so forth. So, it is reasonable to assume that they are human like. And human like forms can only live on earth like planets. The search should be to find how many earth like planets are there in the universe, and how long does it take to get at least a signal (not a vehicle) to such planets. I think these 2 answers will put to rest the questions about an advanced people visiting us and showing us all we know about technology...

[cRush]

They say we were created in their likeness, or atleast, they were able to bear children with humans, or inserted their DNA into us, and so on and so forth. So, it is reasonable to assume that they are human like. And human like forms can only live on earth like planets. The search should be to find how many earth like planets are there in the universe, and how long does it take to get at least a signal (not a vehicle) to such planets. I think these 2 answers will put to rest the questions about an advanced people visiting us and showing us all we know about technology...

It's been calculated by leading mainstream scientists that the number of Earth-like planets in the habitable zone in the visible universe is somewhere on the order of 1.3 billion. Of course, Sunrisepony thinks we shouldn't trust anything mainstream scientists say. Afterall, we are clearly more knowledgeable than those who dedicate their lives to studying these subjects.

[Sunrisepony]

They say we were created in their likeness, or atleast, they were able to bear children with humans, or inserted their DNA into us, and so on and so forth. So, it is reasonable to assume that they are human like. And human like forms can only live on earth like planets. The search should be to find how many earth like planets are there in the universe, and how long does it take to get at least a signal (not a vehicle) to such planets. I think these 2 answers will put to rest the questions about an advanced people visiting us and showing us all we know about technology...

But, like I said you must consider that the probability of there being races out there that are hundreds of thousands to millions (maybe even billions?) of years more advanced than earth humans, so who's to say they don't have terra forming abilities to convert non-earth like planets into habitable planets, then you have the probability that some have likely adapted to other atmospheric conditions and types. You assume they can only live on earth like planets, that's without significant evidence or consideration of the fact that they are aliens, humans from other planets, they you have aquatic species, and reptilian species and all I'm really saying is it's unfair and short sighted by anyone to try and hold or conform such advanced races of aliens to earth's rules and laws when in the grand scheme of things we are a very very young race and our planet is only 4 some odd billion years old.

It's been calculated by leading mainstream scientists that the number of Earth-like planets in the habitable zone in the visible universe is somewhere on the order of 1.3 billion. Of course, Sunrisepony thinks we shouldn't trust anything mainstream scientists say. Afterall, we are clearly more knowledgeable than those who dedicate their lives to studying these subjects.

Mainstream just might be the wrong term, I think more appropriately it should be "Evolutionist / Western Orthodox Theorist". There is the occasional mainstream scientist that doesn't fear putting the truth out there of exactly how old our planet and humanity really is.

[allspark]

I have a question.......
If these aliens were so many thousands of years ahead in all the sciences. Why did they use drills to carve egyptian stone ?
The so called 'sarcophagus' in the great pyramid has been shown by Chris Dunn to have been drilled !
Did they not have a laser or some other futuristic device ?
Does that not point to the strong possiblity that man made it ?

[Sunrisepony]

Didn't Giorgio say that aliens did not make/build the Pyramids. But, that earth humans built the pyramids with the *help* of the aliens. They would have had to have used lazers or directed energy weapons though to quarry the stones that were used to build the pyramids specially with the speed and accuracy, and they would have had to have used some form of anti-gravity/levitation tools to move those stones. It's really the only logical possibility. The earth humans obviously used stone drills for parts of it though, that much is obvious, like you pointed out. I even saw photos of evidence that shows drills were used in Abu Garub, another site south of the pyramids. Who was that Egyptologist that found all those stone drills? Any of you remember his name? It escapes me at the moment. And you can't just arbitrarily pick one site and use it as proof to allude to aliens being advanced by years and technology or not, it's only speculation at that point. I don't think though that Giorgio or any of the other Ancient Alien theorist are claiming that the aliens built all those megalithic sites, but are saying they HELPED build them, which makes a lot of sense, since it's in all ways impossible that the Western Orthodox theorist could in any way be correct.

[Gizmo]

the only problem i see here is that some of you are making the aliens think like us and they dont have to think like us like even if the trip took 2000 years maybe they would mind make it even if the people that got here were their sons and stuff we dont know they dont need to be restricted by our way of thinking

[Cartomancer]

I'm going to have to agree that the Ancient Alien theory may have many flaws. There are too many people just wanting to believe this blindly. The Ancients did have technology. They could have easily built the Antikythera device two thousand years before its discovery by men. There is a clear record of complex mechanical devices being built by the Egyptians and Greeks. Most of this tech was used to manipulate and fool people and was kept secret. "Gee whiz how did they know there would be an eclipse today-they must be gods." The technique of telling you aliens did it or were gods may go back all the way to Sumeria etc. This entire construct could as easily be a manipulative method of controlling you. (see my article about The Tower of the Winds in Athens for an example of the above: Survivalcell.blogspot.com).

I am continually amazed at the people who blindly believe this stuff. I understand that it is inevitable that there is life in the universe. Have they visited here? Maybe. The bottom line is that I believe all of this is an occult construct using the concept of aliens to cover up the truth about what our history is. If all of this tech was available in ancient times how did none of it survive? A: because they kept it all a secret to take advantage of you. When their civilization collapsed the tech was either lost or the priesthood moved on to the next Axis Mundi they would create:

Uruk>Giza>Baalbek>Athens>Constantinople>Rome>Paris>London>New York City>Washington D.C. to name a few) (most people have no idea where these places are on the earth even but they want to believe in ancient aliens). As a whole we are so ignorant that all it takes is to build a monument that has exact dimensions that reflect geometry? If you have knowledge of geometry from viewing the cosmos for thousands of years wouldn't you want to make your building proportioned? No lets build our temple in a sloppy way even though it is a divine place. Let's not put it at an even angle from the other one. come on. Every single bit of all of this came from people examining the stars at night. A priesthood sprung up around this phenomena and they recognized how to use practical science and math against the masses. Ancient rulers were especially adept at this. Do you think King Solomons Demons were'nt rational smart men?

Let's not forget that all Muslims face Mecca to pray. Each mosque has an element of its construction that points to Mecca. Is this some occult grid that has Tesla technology? A: NO. If someone examined these structures in one thousand years this is most likely the conclusion they would come to. Do they have free energy in Mecca? A: NO. There are a lot of people out there who want you to believe this stuff. The entire new age movement is there to assure that you don't find the real truth while you are channeling Pleiadians and trying to ascribe occult manipulation to people from other star systems. Everyone check out how Ancient Aliens is produced by a company called Prometheus entertainment. Then go research the occult meaning of the greek myth of how fire and light was given to man. Prometheus the light bearer. What a joke.

These people have masses of people screaming for disclosure while they are laughing their asses off! Why don't you all go find structures on Mars while we are all getting screwed right here on Earth. Meanwhile I'm sure "Ancient Aliens" will get another season.

"If you build it they will come."

[vmatt2000]

We can't hold them to earthly technology, and time frames, and physics laws. Some of the species out there are hundreds of thousands of years further advanced than we are, they have vehicals that take them into Hyper-Space which likely takes about maybe a few hours tops to get from earth to pluto. A good comparison would be warp drive theory, they have also worm holes and star gates, which can transport not only through long distances in space, but also time. Time, Space and Thought are not the separate things they appear to be. And, the probability is that they've long mastered FTSP travel. There are even ones out there that are likely millions of years far more advanced than earth, and the possibilities of what they are capable of is unfathomable at this point, our minds are not even capable of conceptualizing all of it. I think it was the Pleiadians that had somewhere along the way mentioned that our current laws of physics are archaic and they've long long ago over come those. They come from all over the universe, and other universes and dimensions.

I don't disagree, that, theoretically, anything you wrote here is possible. But, look at the Ancient Aliens shows on TV. What they are trying to do is prove that ancient aliens came and visited us, and they are showing evidences of technology stuff like we have today. There is no PROOF of any of these incredible time travel, warp speed, worm holes, etc. All those are figments of imagination and, remember, part of THEORETICAL physics, which, most people don't even consider an exact science. So, if you are going to prove that ancient aliens exist, don't do that in terms of showing evidences of CURRENT technology.

[Sunrisepony]

Actually there is tons of proof of Hyper Space, Worm Holes and Star Gates (which include time travel) and portal technology. Even the US Military had for a long time Portal and Star Gate technology (Project Looking Glass for example), I think they likely still have it. But, it is there. Many star gates exist here on earth, and I'm bloody well sure if they exist here on earth, which they do then they HAVE to exist out there in space. Like I said, it's presumptuous and short sighted at best to try and hold Aliens to our earthly limitations, even from a physics point of view. And. I really don't know about others here but I don't just watch Ancient Aliens, I've done years and years of research on my own, and that is seriously what others need to do here, look beyond the surface and see the truth for themselves and stop trying to hold Aliens to earthly limitations. I know quantum physics, quantum dynamics, astrophysics, one of my closest dearest friends is a astro-physicist.

Or maybe we all just have to agree to disagree, because I've seen the evidence myself and I sure am not going to change my mind. And if you skeptics want to be short sighted and believe it's impossible for this kind of technology to exist when there are species out there Millions of years beyond us in evolution and technology OBVIOUSLY, then fine. Go for it.

[Jeff Sheets]

I have a question.......
If these aliens were so many thousands of years ahead in all the sciences. Why did they use drills to carve egyptian stone ?
The so called 'sarcophagus' in the great pyramid has been shown by Chris Dunn to have been drilled !
Did they not have a laser or some other futuristic device ?
Does that not point to the strong possiblity that man made it ?

Giorgio has always said that he thinks man built the pyramids under the blueprint and direction of the gods.

Conversely, have you seen the photos of the slots drilled in the Pumu Punku ruins? There were holes drilled through the stone for at least 2 or 3 continuous feet and no cut marks. There is also a nearby quarry 20 miles away downhill that is cut level and plumb from both ends. Looks to me like something stronger than a drill bit cut out the rock.

[cRush]

I kind of like the theory that the pyramids, and other ancient megaliths are remnants of a previous advanced civilization or alien culture that has since departed Earth long before modern man.

[Sunrisepony]

cRush

Have you investigated the Osirian Civilization? They might be who built the Egyptian Pyramids at least, and many megalithic sites through out the Mediterranean. But, yes for the most part I agree with that. The articles etc that I've been reading most recently talk about that exact thing right there.

Here's one link for you and others to check out and consider.
http://www.bibliotecapleyades.net/andromeda/andromedacom_galactichistory.htm

[allspark]

Conversely, have you seen the photos of the slots drilled in the Pumu Punku ruins? There were holes drilled through the stone for at least 2 or 3 continuous feet and no cut marks. There is also a nearby quarry 20 miles away downhill that is cut level and plumb from both ends. Looks to me like something stronger than a drill bit cut out the rock.

Pumu Punku is amazing. Mainstrean archeologists won't touch the subject.

[Sunrisepony]

They wont touch it because it will force them to shove their own foot in their mouths so far they'll be able to kick their own butts.

[coomba98]

Hay all.

My 2 cents.

Example:-

Look at our technology today. Now ask yourself:- 'What would we have in say 5,000 years? What would our planes look and sound like? Our Tech? Or our understanding of everything?'

Now lets go back 5,000 years from today and look at the texts, pictures and carvings of the Air ships the Gods used at that time (3,000 BC). They sound pretty darn similar to what we use today!

Now lets skip ahead from today, 5,000 years.

Do you think we could have ships not unlike the ones people see today and class as UFO's. Not the noisy ones of the past, the ones reported in our lifetime.

example:- Our air craft today, like the crafts of the Gods 5,000 years ago are very noisy, fire is seen etc.etc.etc.

In 5,000 years time I think there is a huge possibility that we would have very fast, very silent air ships like what UFO's do today.

I think this is what vmatt200 is getting at. This is still a high possibility in my mind.

If the Gods used petrolium based vehicles back in the day then they must have come from somewhere close by. Venus, Mars or the Earth. When thinking of this theory I keep coming to the
conclusion that the Gods are just us. From Earth. As Venus is not suitable for humans and Mars is a dead planet.

Coomba98

[cRush]

example:- Our air craft today, like the crafts of the Gods 5,000 years ago are very noisy, fire is seen etc.etc.etc.
---
If the Gods used petrolium based vehicles back in the day then they must have come from somewhere close by. Venus, Mars or the Earth. When thinking of this theory I keep coming to the
conclusion that the Gods are just us. From Earth. As Venus is not suitable for humans and Mars is a dead planet.

Petroleum is only one of a nearly infinite pool of possible ways to create a combustion engine.

---

I think "Mainstream scientists" steer clear of commenting on Puma Punku simply because they don't have enough information about the site to form any type of educated conclusions.

"Better to keep your mouth shut and be thought a fool than to open it and remove all doubt" I believe the saying goes? It's best not to comment on something until you have enough information to draw a valid conclusion - something that is rarely practiced!

[Sunrisepony]

I believe if we didn't have Western Orthodox Theorist suppressing information and technology and destroying our true history like they have for so long, we would be a much different planet in many many ways.

[Moon]

I kind of like the theory that the pyramids, and other ancient megaliths are remnants of a previous advanced civilization or alien culture that has since departed Earth long before modern man.

Several researchers do think most of the monuments were built from older blueprints and point to clues as to where the knowledge came from and possibly what happened to them. While there is evidence a comet hit North America 13,000 years ago, it is difficult to see how this would of affected civilizations elsewhere at the time. I am wondering if there was some type of perfect storm of events which took place that wiped out most of the civilizations of antiquity.

There is also a possibility of both ancient civilization and ancient extraterrestrial contact.

[Sunrisepony]

I think "The Destruction Of Atlantis" by Frank Joseph points out about a global cataclysmic event that happened around the end of the Bronze Age (specifically around end of October/Early November and alludes to that being the origins of Sam Hain/All Hollows Eve/Holloween/Day Of The Dead/All Souls Day), and mentions about asteroids hitting, floods, tsunamis, volcanoes erupting. Sighting mostly tribal and ancient cultures records that at least survived the destruction of the deinformation age.

[Moon]

I think "The Destruction Of Atlantis" by Frank Joseph points out about a global cataclysmic event that happened around the end of the Bronze Age (specifically around end of October/Early November and alludes to that being the origins of Sam Hain/All Hollows Eve/Holloween/Day Of The Dead/All Souls Day), and mentions about asteroids hitting, floods, tsunamis, volcanoes erupting. Sighting mostly tribal and ancient cultures records that at least survived the destruction of the deinformation age.

So far, only evidence of a possible comet hit in North America has been found. They are always looking for evidence of any asteroid or other object hit. 13,000 years ago would still be quite fresh in geology terms so they would find the evidence for one.

I also wonder if it is man made as to what happened. The Europeans did go through the Dark Ages, and that was not brought on by any natural disaster, but by their own making.

[Sunrisepony]

So far, only evidence of a possible comet hit in North America has been found. They are always looking for evidence of any asteroid or other object hit. 13,000 years ago would still be quite fresh in geology terms so they would find the evidence for one.

I also wonder if it is man made as to what happened. The Europeans did go through the Dark Ages, and that was not brought on by any natural disaster, but by their own making.

According to the evidence FJ puts in his book, he said that among other spots, one even hit off the coast of Bermuda as far as asteroids go anyway. And that hitting in a very seismically active area set off volcanoes around the world and tsunami etc. It was an unusually close pass by Eniki's Comet which passes twice a year, usually June and November. It was asteroids from that Comet's tail that hit a few places around the world causing the floods etc. It would stand to reason considering the depths of the Atlantic and Pacific in certain spots that if Asteroids hit there, they wouldn't find them as of yet. But if a tribe or ship in the area saw it hit, then it would have been recorded.

[cRush]

Wouldn't a comet strike anywhere on the planet have global implications of a devastating magnitude?

[Occam Razor]

Depends on size and velocity.

[Sunrisepony]

And the seismic stability of the area in where it strikes. But, I didn't say "Comet strike" I said "Asteroid Strike" from the tail of Eniki's Comet, just for clarification. And there is a significant difference between an Asteroid and a Comet.

[Moon]

Wouldn't a comet strike anywhere on the planet have global implications of a devastating magnitude?

It should of caused the ice caps to stay frozen a while longer. The evidence points to them melting in the time period, which is why the comet theory has not been totally embraced.

Any strike of a large object on the Earth would cause debris to cloud the air and lower the temperature for a few years causing some devastating effects. The mass extinctions of some large mammals point to something big, but others claim the over hunting of the animals is the reason.

Geologists are looking for more evidence to support the comet hit by looking for certain elements which would indicate such a hit. While some has been found, not enough is out there to fully prove the idea of a comet hit.

I am one who thinks it is possible the problem was caused by man himself and not a natural disaster. Maybe some type of germ or chemical warfare, or even nuclear weaponry.

And the seismic stability of the area in where it strikes. But, I didn't say "Comet strike" I said "Asteroid Strike" from the tail of Eniki's Comet, just for clarification. And there is a significant difference between an Asteroid and a Comet.

A strike from an asteroid would be much worse as a comet is usually made up of gases. The asteroid is a chunk of metal and its size would determine how bad Mother Earth feels the effects.

The best thing to do is look for any evidence of a natural disaster like a comet or asteroid hit or a super volcanic eruption. So far, the evidence for a super volcano erupting at that time has not been found yet.

If there was a super civilization, I am wondering why nothing survived any type of cataclysmic event. Many questions are raised as more evidence is found.

[Corcaigh]

Assuming these human like forms have a limited life span, why would anybody spend 20-30 years of their life time to come to earth and go back?

Maybe they didn't go back? Maybe they have technology that made the journey a lot quicker?

Also, why do we not see anything from THEIR world, and only things from OUR world DEPICTING what earthians saw?

Do we know that for certain? There are strange things here on Earth that we cannot explain (the Spinx for one)

How could they have communicated with people thousands of years ago, assuming they were far advanced and we were very primitive? How many people speak sumerian or aramaic now? Languages are lost over time. Not only that, try talking light year to a 3 year old, how would the ancient astronauts even make our primitives UNDERSTAND science?

This is very true, communication would be problematic, but then people are capable of learning to speak other languages, some people are very adept at this - also there's the possibility of telepathic communication. After all we can teach a dog to sit etc, but the dog doesn't speak our language!

[Sunrisepony]

Any strike of a large object on the Earth would cause debris to cloud the air and lower the temperature for a few years causing some devastating effects. The mass extinctions of some large mammals point to something big, but others claim the over hunting of the animals is the reason.

Actually, they determined that the mass extinction of the dinosaurs and other animals were infact not caused by a asteroid or large object strike. At least for that one anyway. They were already pretty much dead by the time the large asteroid struck as they didn't find any remains in the strata dating to the time of the asteroid hitting. And many other species survived the "mass extinction.

An interesting theory, I guess it could be called that. One of the more famous or widely known Alien Species, has said that the asteroid striking the earth have been used to change the climate, and or orbit of the planet to aid in the terra formation and preparation for different species through out the history of the planet it's self by The Founders.

[Moon]

They did find the huge crater near the Yucatan Peninsula which was caused by a huge asteroid 65 million years ago. This is the one believed to of caused the extinction of the dinosaurs.

Remember, one thing asteroid and comet hits do is release millions of tons of dirt and dust into the atmosphere which blocks out the warmth of the Sun. This would cause much havoc to the life forms throughout this planet.