↩ 🔵 🔵 🔵 ❪✺₁.❫⁺ Classes of Astronomical Objects ○ ❪✺₁❫ High-Energy Astrophysics Classes ○ Binary Star ○꠹ ❪✺₁.❫ Classes of X-Ray Binaries ○ ❪◑❫ X-Ray Binaries ○ Also: ❪◑❫ X-Ray States ○