When it comes to the natural study of science and all things celestial, you may think astronomy. Some things that are studied are stars, galaxies, planets, moons and many others. Astronomy is listed as being one of the oldest sciences around to date. The word itself is from the Greek language and means the law of the stars. Getting an astronomy tattoo design may be an indication that you have a love for this science. Some of the more popular tattoos in this category include the moon, shooting stars, and sun tattoos.