Comet composition refers to the makeup of comets, which are small celestial bodies composed of ice, dust, and rocky material. Comets are believed to be remnants from the early solar system, containing material that dates back to the formation of the planets. Studying the composition of comets can provide insights into the origins of our solar system, as well as the conditions that existed during its formation. Scientists analyze the gases and dust particles emitted by comets when they pass close to the sun to determine their composition and gain a better understanding of these mysterious objects.