What's Next?

What's Next

You have implemented the foundational equations of astrophysics. Here are natural next steps:

Cosmology — How stars and galaxies fit into the expanding universe. The Friedmann equation governs everything on the largest scales.
General Relativity — The geometric foundation for black holes, gravitational waves, and spacetime curvature.
Nuclear Physics — The reactions powering stellar cores: proton-proton chain, CNO cycle, and neutron capture.
Fluid Mechanics — Stars are self-gravitating fluids. The Navier-Stokes equations describe convection and stellar winds.

An Introduction to Modern Astrophysics by Carroll & Ostlie — The definitive undergraduate textbook.
Stellar Structure and Evolution by Kippenhahn & Weigert — The standard graduate reference for stellar physics.
Galactic Dynamics by Binney & Tremaine — Deep coverage of galactic rotation, dark matter, and stellar dynamics.
Black Holes, White Dwarfs and Neutron Stars by Shapiro & Teukolsky — Essential for compact object physics.