Additional Maths is considered important for astronomy as it provides essential skills for various astronomical calculations and analyses. The necessity of Additional Maths varies depending on the specific field within astronomy, with some areas requiring more advanced mathematical knowledge than others. The discussion highlights that the relevance of Additional Maths may differ based on educational systems, such as the UK versus Malaysia. For students preparing for exams like the IGCSE, understanding the role of Additional Maths in astronomy can guide their study focus. Ultimately, a solid foundation in mathematics is beneficial for aspiring astronomers.