One of the last entries in Charles Messier's famous catalog, big, beautiful spiral galaxy is definitely not one of the least. About light-years across, this galaxy is enormous, almost twice the size of our own Milky Way Galaxy. was also o
Achromatic: Achromatic colors are neutrals, meaning that they contain no chroma or hue. An achromatic color scheme uses all achromatic or neutral colors: black and white, and a full value tonal range of grays.