Definition
A "nebule" is an archaic or poetic term for a nebula, which is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Nebulae are often regions of star formation, such as the Eagle Nebula. Think of them as stellar nurseries, where stars are born. Unlike a clear, empty space, nebulae are filled with vibrant colors and swirling patterns. They are visible in the night sky, appearing as faint, fuzzy patches. π