Even though "sited" means "located", we have a hunch that you're asking
where they were seen, or "sighted".
The answer is: There has never been any credible evidence, that stood up to competent
scientific investigation, that any terrestrials have ever seen any extra-terrestrials.
Barlowe's Guide to Extraterrestrials was created in 1979.
The ISBN of Barlowe's Guide to Extraterrestrials is 0894805002.
Nowhere in the Bible are extraterrestrials mentioned in any way.
No
Understanding - 1994 Extraterrestrials was released on: USA: 29 August 1998
Near sited means you can't see far away
'Sited' means placed at a certain spot, and 'Cited' means to quote something, usually a law or regulation.
For a start, there isn't any solid evidence for extraterrestrials so far. Of course, there are arguments (mainly of a probabilistic nature) that there SHOULD be extraterrestrials, but that's about all.
National Geographic Explorer - 1985 Searching for Extraterrestrials was released on: USA: 4 December 1994
Although we have no definite knowledge of any extraterrestrials, and we certainly do not know that any extraterrestrials have received any messages from us, we have sent a number of things into space, notably radio and TV broadcasts and various robotic space probes, which would convey information to extraterrestrials if the hypothetical extraterrestrials received them.
the existence of extraterrestrials is a paradox
Spacing Out - 2012 Searching for Intelligent Extraterrestrials 1-49 was released on: USA: 10 May 2013