The Spiral Sombrero Galaxy Print. The Sombrero Galaxy, named because it resembles a broad-brimmed Mexican hat, is oriented nearly edge-on to us. This edge-on view reveals that the discs of spiral galaxies are incredibly thin. The disc displays dark dust lanes, where many young and bright stars reside. The Hubble telescope also shows that the glowing central bulge of stars harbours nearly 2,000 globular clusters of stars, 10 times as many as orbit our Milky Way galaxy. The angular diameter (or the apparent size) of an object is an expression of how wide an object appears to be. The moon is a fixed distance from us and has a fixed inherent size (diameter). The Sombrero galaxy is also of a fixed size and distance. Thus, we can compare their apparent sizes. By saying that the Sombrero galaxy is one-fifth of the diameter of the full moon, that means that if you were able to see the Sombrero galaxy with the naked eye, you could take 5 of them and line them up end to end, and what you see in the sky from these 5 galaxies all lined up equals the same length as the diameter of the full moon. Source: NASA