Interesting idea, but I have to admit that I have absolutely no clue how to play it. I see the stars, but...what are they telling me? It looks like a random scattering of letters. They don't seem to follow any order or pattern, so I have no idea how to even start searching. I've been grappling with this for a while now and I'm clearly not getting something.
Very good to bring this up! The stars in the sky for constellations. These constellations are way bigger than the small window you see from the sky on screen. This way you can navigate much bigger parts of the world, by anticipating the direction of the next star. To be able to anticipate the shape of the constellations, they have the shape of alphabetical letters. Stars of the character Y form a big Y in the sky, composed of many Ys, like you would draw it with dots. So when you see two Ys on screen, you should be able to tell, whether you are in the part '\' or '/' or '|' and therefore also where the other parts of the Y are. When you see only one Y on the screen, you can circle a bit around in search of the next Y and then you should know. Ys are quite easy, let's say a B has much more horizontal and vertical lines, that is a bit more difficult to follow and know whether you are close to the upper part or lower part.