KillerLag 3 points 5y ago
A constellation wouldn't be raised dots, the stars are spheres. From Earth's relative point of view, they appear to be on a black background and thus as dots. But they wouldn't be "raised" as such. The chances of a set of stars making a braille sentence would be highly unlikely, the stars would have to appear close enough to form a sentence without any other stars in the background interfering.