I like this, the concept is rather apt. Sketches a view of both inner and outer infinites, even if you don't say so. I don't really have any criticism, I am just unsure whether that first "space" was part of the poem. If so, it isn't really necessary.
Ah, my head! What you said in this was very thought provoking, and too me it seems like the concept of infinity when you can only except it and not know or prove it anyway. I prefer not to go there but a good write nonetheless.