↩ 🔵 🔵 🔵 ❪𖣐₂’❫ Observatories ○ ❪---❫ Floating ○ ❪-❫ Floating Astronomy ○ ❪—❫ Floating ○ AstroSat ○´ Extreme Ultraviolet Explorer (EUVE) ○´ Gaia ○´ Hubble Space Telescope (HST) ○´ Vera C. Rubin Observatory ○´