Thousands of years mean nothing at those distances.
Galactic clusters (and matter within them) are gravitationally bound to a greater degree than objects in sparser intergalactic space. I'd imagine the vast majority of what could be detected thousands of years ago is within our local cluster.
"A supercluster is a large group of smaller galaxy clusters or galaxy groups;[1] it is among the largest-known structures of the cosmos. The Milky Way is part of the Local Group galaxy group (which contains more than 54 galaxies), which in turn is part of the Laniakea Supercluster.[2] This supercluster spans over 500 million light-years, while the Local Group spans over 10 million light-years.[1] The number of superclusters in the observable universe is estimated to be 10 million.[3]"
Supercluster - Wikipedia
Bodies in space are in rotation breh NOT (just) moving in "straight" (minskowski) lines.
The Moon rotates around the Earth.
The Earth around the Sun.
The Solar System (Sun bound) rotates within the Galaxy.
Galaxies rotate around each other.
In cycles.
Think of it this way even if we moved at 1 million miles in the last 100 years because the moon is gravitationally bound and moving with us it is is the approximate same relative position.
And to detect we measure angular shifts. The entire span of 16 billion years of motion is visible within (and hence subject to division by only) 360 degrees.
If you wait long enough (several billion years no doubt) then everything will pass the Universal Event Horizon and then the night sky will go dark forever.
Sorry but as I said before I've learned all this in high school and college and its gibberish
Rotational mechanics have nothing to do with what I'm speaking on
I'm talking about VECTORS
The VECTORS of the constellations arent parallel to the VECTOR that out galaxy is moving along
Meaning we're supposed to be moving in one direction and the constellations are supposed to be moving in a slightly different direction
By way of this "scientific fact" of heliocentrism, the parallax with respect to each constellations should vary from night to night
Its literally impossible for humans to have been viewing the exact same constellations for 1000s of years
And as a side note, I think it's pretty sad how yall repeat this fantastical science fiction-style rhetoric with such arrogance then show cgi pictures to try and support your claims(none of which you have personally proven, all of which you have been told to repeat)
And "youd imagine" that all the constellations that we see in the sky are tied to a galaxy supercluster huh?
But according to your science priests, even those galaxy supercluster are either expanding away from each other around a fixed point or pulling themselves all together around a fixed point, which STILL wouldnt explain the constellations because on order for objects to expand or contract to a certain point, all angles involved have to add up to 360 degrees, making it even MORE impossible that the constellations are moving in parallel to us smh