Astrophysics Study Guide
Stars, galaxies, cosmology, stellar evolution, and the application of physics to astronomical objects.
Core topics in Astrophysics
- Stellar Structure
- Stellar Evolution
- Galaxies
- Cosmology
- Black Holes
- Observational Methods
- Dark Matter and Dark Energy
Why students struggle
Astrophysics requires fluency across thermodynamics, electromagnetism, general relativity basics, and observational statistics. Few students arrive equally strong in all four.
How Fennie helps
Fennie tracks your weakness across the four pillars and rebalances Daily Plans so all stay active.
How to study Astrophysics
- 01Master stellar parameter relationships (HR diagram, mass-luminosity)
- 02Practice unit conversions (parsec, magnitude, solar units)
- 03Use Fennie for cosmology and redshift problems
- 04Read recent papers — astrophysics moves fast
Frequently asked questions
Is astrophysics good as an undergrad major?
Strong physics foundation, narrow career direct from BA. Most students plan grad school or pivot to data science.
What math do I need?
Multivariable calculus, linear algebra, and ideally a course in stat mechanics.
Does Fennie cover GR basics?
Lightly — Fennie can introduce the Schwarzschild solution and basic black-hole physics; full GR needs a dedicated course.
Start studying Astrophysics with Fennie
Upload your notes, syllabus, or textbook. Fennie builds a Daily Plan in under a minute and rebalances daily based on your performance.
Get started freeOther Physics subjects
Classical Mechanics
Newtonian mechanics, Lagrangian and Hamiltonian formulations, oscillations, rigid bodies, and central forces.
Electromagnetism
Maxwell's equations, electrostatics, magnetostatics, electromagnetic waves, and radiation.
Thermodynamics
Heat, work, energy, entropy, the laws of thermodynamics, and applications to engines, refrigeration, and chemical systems.
Quantum Mechanics
Wave-particle duality, the Schrödinger equation, operators, observables, angular momentum, and identical particles.