Integrating The Unknowns
Popular culture has promoted all of these things as being linked by an underlying belief in aliens. They are not logically linked in any other way. I am not saying that I do not believe in alien lifeforms, because I cannot see how we could be the only intelligent creatures in a universe as vast as this one. That way of thinking is not only statistically unlikely, but arrogantly illogical.
The general assumption of most people is that humanity was not capable of developing advanced technologies before the modern era, and therefore must have had some'outside' help. As far as I know, there is no way to put all of these events and civilizations into one, neatly wrapped package. On an individual basis there are some very interesting features about all of the cultures and theories you mentioned. Individually, MY thoughts are as follows:
Aliens: They do exist, though I have my reservations as to some of the claims some people present. I do, however think that we are, by far, NOT one of the oldest species in the universe, and therefore do not own the 'Cutting-Edge' in technological development capabilities.
Atlantis: I do not believe that we are the first civilization to see some of the technologies we take for granted today. There are to many 'Unexplained' anomalies in our historical records. The Atantis myth is at the bottom of this list. I do think it is probable that an advanced civilization existed before recorded history, but I do not see the necessity of aliens being included in the equation (but this doesn' t exclude them either).
Egyptians: Again, I don't see the necessity of including aliens, but I do also lean toward the fact that there is a lot of weird facts associated with the Egyptian and Sumerian (which existed about the same time) civilizations. According to Zechariah Sitchin ,nd others, these civilizations were the product of information recieved from 'The Gods'. Being that the Sumarian civilization appeared very suddenly with features of highly advanced civil concepts (such as: astronomy, mathematics, medical, architechtural, governmental, etc...), I also am very curious as to how this could happen without some sort of intervention by an outside source.
The Bible: The 'Aliens' you refer to are the 'Nefilim' in Genisis. This term was originally mistranslated as 'Giants', but actually meant 'Those who from heaven to earth fell'. These were apparently a group of 'Angels' whose job was to 'Watch' mankind and report their activities to "God'. This is how they got the name os 'The Watchers' (which, interestingly enough, was the same term in which the Egyptians refered to their 'Gods'). These guys found 'the daughters of men' 'favorable' and impregnated them. Their offspring were '..the great men yore...' (i.e.: Hercules and other 'Hybrids').
There is always more, but time is short...
