↩ 🔵 🔵 🔵 ❪✺₄❫ High-Energy Astrophysics Sets ○ ❪✺_ₛₛ❫ Astronomical Subsets ○ ❪◑❫ Astronomical Objects ○ X-Ray Binary (XRB) ○꠹ ❪◑❫ HMXB ○ ❪◑❫ LMXB ○ Also: ❪◑❫ X-Ray States ○