I can only think that
These must be pretty absolutely massive ships / riffs / apertures whatever to be seen by earth based telescopes.
-or-
It would have either been so far away from earth that it would have happened decades/centuries/eons ago
-or-
If it was within some proximity to earth it wouldn't be in the same location of the sky as it was when you posted the thread.
Go back to playing portal, Final hypothesis.... BS.








