Recommendations for books on planets, cosmology, solar physics, and galaxies were sought, with several titles highlighted as valuable resources. Notable suggestions included "Introduction to Modern Astrophysics" by Carroll & Ostlie, praised for its comprehensive coverage and rigorous approach, though noted for its higher cost. Other recommended texts included works by Liddle and a variety of astrophysics and cosmology books that cater to different levels of understanding. The discussion emphasized the importance of calculus in these texts, confirming that "Introduction to Modern Astrophysics" is calculus-based, requiring familiarity with vector calculus and differential equations, but remains accessible for those with a basic understanding of physics. The conversation also touched on the prerequisites needed for tackling these subjects effectively, indicating that a foundation in ordinary differential equations and multivariable calculus would suffice for introductory electromagnetism.