[Svartalfiar]

All objects were found away from the Milky Way's galactic plane and are around 1 arcminute across (for comparison, the moon's diameter is 31 arcminutes).

What is the point of this comparison? Arcminutes are a measurement of angle, 1/60th of a degree. Without knowing distance to these objects, the angle measurement is kinda useless, aside from us knowing that they appear to be 1/31st the size of the moon. (Also, the moon isn't always "31 arcminutes" wide, is that at a particular apsides? The average distance?)

[Svartalfiar]

I forgot to mention, these objects are HUGE. If they’re visible and outside of the Milky Way, that means they are very far away (Milky Way has a radius of 50-60M light-years), so tens of thousands, if not hundreds/thousands, of light-years away (we’re on the edge, and I don’t know if these sightings are near side or across the galaxy)

For measurements, Diameter = distance x arcmin / 3438.

So these four(!) objects, at 300M light-years away, are the same size as our entire galaxy. But, considering we can already ‘see’ other galaxies, none of which are that close, seems to imply these are so far away that we can’t get a better resolution on what they are. So our size formula means they have to be what, 10MM light-years big? Bigger?