↩ 🔵 🔵 🔵 ❪✺₄❫ High-Energy Astrophysics Sets ○ ❪◕❫ Astronomical Objects ○ X-Ray Binary (XRB) ○꠹ ❪◑❫ HMXB ○ ❪◑❫ LMXB ○ Hercules X-1 ❍