# Astro Physics

> Celestial objects and cosmic phenomena

- Skill: `ffsshhttiikk/astro-physics` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ffsshhttiikk/astro-physics`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ffsshhttiikk/astro-physics/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- License: MIT
- Author: ffsshhttiikk (https://skillmd.com/u/ffsshhttiikk)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ffsshhttiikk/astro-physics

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## What I do
- Analyze stellar structure and evolution
- Model galactic dynamics and dark matter
- Calculate orbital mechanics for spacecraft
- Simulate gravitational lensing
- Predict cosmic microwave background anisotropies
- Study exoplanet detection methods

## When to use me
When analyzing astronomical observations, designing space missions, or modeling cosmic phenomena.

## Key Concepts
- **Stellar Evolution**: Main sequence → red giant → white dwarf/neutron star/black hole
- **HR Diagram**: Luminosity vs temperature relationship for stars
- **Schwarzschild Radius**: r_s = 2GM/c² defines black hole event horizon
- **Virial Theorem**: 2K + U = 0 for gravitationally bound systems
- **Kepler's Laws**: Orbital periods and distances for planetary systems
- **Mass-Luminosity Relation**: L ∝ M^3.5 for main sequence stars