Scientists are of the opinion that there are an estimated twenty trillion galaxies in the universe. The further the galaxy, the finer it appears. What is the Milky Way. The most mysterious and wonderful object in the sky is the Milky Way. It is like a pale cloud stretched across the sky which is visible on a clear moonless night. In olden days, when people did not know much about it, they made up all the sorts of strange spirits of the Milky Way.