17th November,
I'm afraid I must disagree with your statement that certain elements of government are unaware of the Earth's true shape, or that they are not covering it up. Charges of Conspiracy brought forward by Zetetics differ from those brought forth in a UFO context - I sincerely believe that the Conspiracy is not a catch-all to be frivilously inserted into legitimate study of science, but that if it exists, and where it is seen to exist, we cannot help but point it out.
The space programmes of the world are prime examples - when addressing issues of "space exploration" from a Zetetic perspective, mention of the Conspiracy isn't some sort of cop-out or ridiculous fantasy, but merely a concession of what must be the case (and what is science if not the study of that which is true?)
I also assure you that much scrutiny of the Conspiracy has most certainly been derived from commited Zeteticists - the great Zetetic Scientist John Hampden was keen to point out the foundings of the Conspiracy happening right under his nose in 19th Century Britain, and the collaboration of certain wealthy media moguls and Globularist quacks in order to discredit the Zetetic Science community (and most shamelessly rob them of their money, too - Hampden was driven into bankruptcy by continued legal molestation by the deluded and wholesomely evil Alfred Russell Wallace, following a plot to trick Hampden which Hampden rightly spotted and consequently called Wallace on). The involvement of Astronomer Royal George Airy in Wallace's foul plot represents perhaps one of the first elements of "governmental Conspiracy" in the long history of nutty Globularist subterfuge.
Additionally, Charles K Johnson, one of the most notorious Zeteticists of the 20th Century, was keen to point out NASA's involvement in the space Conspiracy at every possible opportunity.
Consequently, the Conspiracy is certainly not fabricated, even less so fabricated by globularists.
I do not believe that the government in general (including intelligence agencies) is covering up either the truth about the Flat Earth or UFO's neither of which it knows anything about. A lot of the same cliches about conspiracy have been applied to Flat Earth study (such as a government coverup) by people who do not even believe the Earth is flat.
How are the activities of NASA and other space agencies explicable if government (or at least some elements of government) are unaware of the Conspiracy? I gladly concede that government is not involved in its entirety in the Conspiracy, but some element of awareness in certain areas of government is inevitable.
As for the interdimensional hypothesis, I confess that I am poorly read in the literature of UFOology. From what I have ascertained about the interdimensional hypothesis, it certainly seems more plausible, in the light of what we know about the physics of the Earth and universe, than "men from outer space", primarily because I regard "space travel" as it is conventionally understood as a farcical nonsense which violates the laws of physics (the real laws, not the made-up Newtonian laws). I'll certainly do a bit of reading on the subject, thanks for the recommendation!