I'm going yo have to wait until I get home to really dig into it, but here's a very quick observation on: >>23789939
Like the original, this one is split into seven elements. I suppose this is Luna's response to "our" message into space.
I've used red lines to separate the elements, so from the top down, here's a interpretation of the elements:>1. Numbers
Identical to the human number system.>2. DNA
Unlike humans, this DNA structure is made of Scandium, Zinc, Vanadium, Oxygen and Gallium.>3. Nucleotides
These are going to take some time to crack, so I'll just skip them now. But they're not human.>4. Double Helix
Assuming this is supposed to be pony DNA, they also use the double helix structure, but it's once again different from humans.>5. Humanity/Equinity
The figure in the middle of element 5 is a pony. The bar directly left of the figure is multiplied by 126 mm and does in the human version display the average height of a male human. Here it gives us a presumed height of 1.638 m.
They're tiny horses, who would have known?
On the other side, we have the population count. According to this, Equestria has a population of 4 292 214 766, almost exactly the same Earth had in 1974.