Astrophysics II

1. Download and open the app, then sign in to enable cloud sync for bookmarks and notes. 2. From Home, pick a topic like stars, galaxies, or cosmology, or use Smart Search to jump to specific concepts, equations, or constants. 3. Open an article to read a concise summary; tap any formula to view variables, units, derivations, and typical values. 4. Use the built‑in calculators and unit converter to input values, select units, and generate results with plots where available; save or share outputs. 5. Start a practice session by choosing a topic and difficulty; answer questions, then review step‑by‑step solutions and bookmark tricky items for revision. 6. Optional: download offline packs, customize reference tables, and export citations or notes to PDF or BibTeX for reports and assignments.