[Quix]

I assumed it was referring to home sized telescopes.

[GeronL]

Maybe. I would hope so.

[ez]

I researched these objects at sky-map.org. They are really there and not “photoshopped.”
I read all the books...”Chariots of the Gods” and such when I was younger and I am open to the idea that there are MANY things about the universe we do not know.
I can envision a scenario where the Mayans were visited in the past and were told...”when this calendar expires, we will return.”