❪✺_ₛₛ❫ Astronomical Subsets ○ Relationships

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• ❪✺₄❫ Astronomical Sets ○
• ❪✺_❫ Astronomical Subs ○
• ❪✺_ₛₛ❫ Physical Subsets ○

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• ❪✺_ₛₛ❫ High-Energy Astrophysics Subsets ○
• ❪✺_ₜₛ❫ Astronomical Typesets ○
• ❪◑❫ Astronomical Coordinate Systems ○
• ❪◑❫ Galaxies ○
• ❪◑❫ Galaxy Clusters ○
• ❪◑❫ Nebulae ○
• ❪◑❫ Novae ○
• ❪◑❫ Space Agencies ○
• ❪◑❫ Spectral Types ○
• ❪◑❫ Star Systems ○
• ❪◑❫ Supernova Remnants ○
• ❪◑❫ White Dwarves ○
• ❪◑❫ X-Ray Binaries ○

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