↩ 🔵 🔵 🔵 ❪✺₍₀₎❫ Astronomical Corridors ○ ❪✺₍₀₎❫ High-Energy Astrophysics Corridors ○ Accretion ○ ❪✺₁ᵢ❫ Accretion Classes ○ ❪✺_ᵢ❫ Accretion Subs ○ Advection-Dominated Accretion Flow (ADAF) ○ Geometric Thickness ○ Magnetorotational Instability (MRI) ○