👉 The term "nebulose" is used in astronomy to describe a nebula, or cloud of gas and dust that appears as a swirling mass of smoke. Nebulosity is a natural phenomenon and often observed in the night sky, particularly during periods of low light intensity. In this context, "nebula" refers to a large, spherical object with a thin, glowing outer layer. As it moves closer to us, we see a continuous column of gas and dust that appears like smoke