Xigashada Sawirka, The Cat's Eye Nebula ama NGC 6543, waa nebula planetary ah oo aad u dhalaalaya oo ku yaalla xiddigta waqooyi ee Draco, waxaa helay William Herschel Febraayo 15, 1786. Waxay ahayd nebula planetary ah oo ugu horeysay oo muuqaalkiisa la baaray by English hiwaayadda astronomer William Huggins, oo muujinaya in nebula planetary ay ahaayeen gaas iyo ma xiddigaha dabiiciga ah. Dhisme ahaan, shayga ayaa lahaa sawirro xallinta sare ee Hubble Space Telescope oo muujinaya qanjidhada, jets, xumbooyinka iyo qaansooyinka adag, oo ay iftiiminayaan nebula planetary core (PNN). Su'aal: Maxaa loo isticmaalay in lagu arko shayga?
Shabakada Hubble