↩ 🔵 🔵 🔵 ❪✺₍₀₎❫ Astronomical Corridors ○ ❪✺₍₀₎❫ High-Energy Astrophysics Corridors ○ X-Ray Binary (XRB) ○꠹ ❪✺₁ᵢ❫ X-Ray Binary Classes ○