[<1/1,000,000th%]

What might be beyond the Milky Way is not likely to be of direct interest to earthlings, ever.

Andromeda and M31 both have tendrils of matter that extend to the Milky Way.

So you never know.

[RightWhale]

M31 is the Andromeda galaxy, which, happens to be coming right at us or the Milky Way at it if you are not a Milky Way Centrist, and we will collide eventually. It will be disruptive, no doubt.