👉 The term "nebulised" is used in astronomy to describe a star that has been illuminated by an external light source. This can happen when a planet or other celestial body emits light, such as from a comet or a star, and then passes through a cloud of gas or dust in the atmosphere of another star. The resulting nebula is said to be "nebulised" because it resembles a cloud of gas and dust that has been illuminated by an external source of light.
