[{"n": "Emission nebula", "u": "/e/emission-dark-and-reflection-nebulae/emission-nebula/", "s": "Ionized gases emit light, often red from hydrogen."}, {"n": "Herbig–Haro object", "u": "/e/emission-dark-and-reflection-nebulae/herbig-haro-object/", "s": "Bright patches of nebulosity from newborn stars' jets."}, {"n": "Homunculus Nebula", "u": "/e/emission-dark-and-reflection-nebulae/homunculus-nebula/", "s": "Bipolar nebula from Eta Carinae's Great Eruption, brightest mid-IR object."}, {"n": "LMC N79", "u": "/e/emission-dark-and-reflection-nebulae/lmc-n79/", "s": "Emission nebula in the Large Magellanic Cloud hosting a super star cluster."}, {"n": "N44 (emission nebula)", "u": "/e/emission-dark-and-reflection-nebulae/n44-emission-nebula/", "s": "Emission nebula with a superbubble structure in the Large Magellanic Cloud."}, {"n": "NGC 6334", "u": "/e/emission-dark-and-reflection-nebulae/ngc-6334/", "s": "Massive emission nebula and star-forming region in Scorpius."}, {"n": "Nova remnant", "u": "/e/emission-dark-and-reflection-nebulae/nova-remnant/", "s": "Faint nebular shells from nova eruptions, visible for centuries."}, {"n": "Propeller Nebula", "u": "/e/emission-dark-and-reflection-nebulae/propeller-nebula/", "s": "A dim emission nebula in Cygnus shaped like a two-blade propeller."}, {"n": "RCW 79", "u": "/e/emission-dark-and-reflection-nebulae/rcw-79/", "s": "A stellar bubble in Centaurus, sculpted by hot young stars."}, {"n": "RCW 88", "u": "/e/emission-dark-and-reflection-nebulae/rcw-88/", "s": "Emission nebula in Circinus, misclassified as a planetary nebula."}, {"n": "Sh 2-58", "u": "/e/emission-dark-and-reflection-nebulae/sh-2-58/", "s": "Emission nebula in Scutum, associated with active star formation."}, {"n": "Sh 2-170", "u": "/e/emission-dark-and-reflection-nebulae/sh-2-170/", "s": "Emission nebula in Cassiopeia, dot of the Question Mark Nebula."}, {"n": "Sh 2-185", "u": "/e/emission-dark-and-reflection-nebulae/sh-2-185/", "s": "An H II region centered on Gamma Cassiopeiae, containing two cometary nebulae."}, {"n": "Sh 2-305", "u": "/e/emission-dark-and-reflection-nebulae/sh-2-305/", "s": "Emission nebula in Puppis, ionized by massive O- and B-type stars."}, {"n": "Sh 2-308", "u": "/e/emission-dark-and-reflection-nebulae/sh-2-308/", "s": "A bubble-shaped nebula around a Wolf–Rayet star in Canis Major."}, {"n": "Westerhout 3", "u": "/e/emission-dark-and-reflection-nebulae/westerhout-3/", "s": "A prolific massive star-forming region in the Perseus Arm."}, {"n": "Westerhout 31", "u": "/e/emission-dark-and-reflection-nebulae/westerhout-31/", "s": "A Milky Way star-forming complex in Sagittarius."}, {"n": "Westerhout 43", "u": "/e/emission-dark-and-reflection-nebulae/westerhout-43/", "s": "The Milky Way's most active star-forming region, hidden by dust."}, {"n": "Wreath Nebula", "u": "/e/emission-dark-and-reflection-nebulae/wreath-nebula/", "s": "A ring-shaped stellar nursery in the Perseus molecular cloud."}, {"n": "Dark nebula", "u": "/e/emission-dark-and-reflection-nebulae/dark-nebula/", "s": "Dense interstellar clouds that block visible light from background objects."}, {"n": "Finger of God Globule", "u": "/e/emission-dark-and-reflection-nebulae/finger-of-god-globule/", "s": "A dark Bok globule shaped like an upraised middle finger."}, {"n": "Reflection nebula", "u": "/e/emission-dark-and-reflection-nebulae/reflection-nebula/", "s": "Interstellar dust clouds made visible by reflected starlight."}, {"n": "HD 65750", "u": "/e/emission-dark-and-reflection-nebulae/hd-65750/", "s": "Red giant star with the unusual Toby Jug Nebula."}, {"n": "HH 24-26", "u": "/e/emission-dark-and-reflection-nebulae/hh-24-26/", "s": "Region with the highest concentration of astrophysical jets known."}, {"n": "IC 444", "u": "/e/emission-dark-and-reflection-nebulae/ic-444/", "s": "A disputed reflection nebula in Gemini, often linked to LBN 840."}, {"n": "IC 2220", "u": "/e/emission-dark-and-reflection-nebulae/ic-2220/", "s": "A butterfly-shaped reflection nebula around a dying red giant star."}, {"n": "McNeil's Nebula", "u": "/e/emission-dark-and-reflection-nebulae/mcneil-s-nebula/", "s": "A variable reflection nebula that appears and disappears unpredictably."}, {"n": "Monoceros R2", "u": "/e/emission-dark-and-reflection-nebulae/monoceros-r2/", "s": "A giant molecular cloud with reflection nebulae and ongoing star formation."}, {"n": "NGC 7129", "u": "/e/emission-dark-and-reflection-nebulae/ngc-7129/", "s": "A rosebud-shaped reflection nebula in Cepheus, lit by young stars."}, {"n": "VdB 158", "u": "/e/emission-dark-and-reflection-nebulae/vdb-158/", "s": "A blue reflection nebula shaped like a cosmic checkmark in Andromeda."}, {"n": "Vela supernova remnant", "u": "/e/emission-dark-and-reflection-nebulae/vela-supernova-remnant/", "s": "One of the closest and brightest supernova remnants in X-rays."}, {"n": "H II region", "u": "/e/emission-dark-and-reflection-nebulae/h-ii-region/", "s": "Ionized hydrogen regions where new stars are born."}, {"n": "Barnard's Loop", "u": "/e/emission-dark-and-reflection-nebulae/barnard-s-loop/", "s": "A faint emission arc in Orion, part of a superbubble."}, {"n": "Cepheus A", "u": "/e/emission-dark-and-reflection-nebulae/cepheus-a/", "s": "A nearby site of massive star formation and protostellar accretion."}, {"n": "Gemini OB1 Molecular Cloud", "u": "/e/emission-dark-and-reflection-nebulae/gemini-ob1-molecular-cloud/", "s": "A vast star-forming complex in western Gemini."}, {"n": "Gum catalog", "u": "/e/emission-dark-and-reflection-nebulae/gum-catalog/", "s": "Catalog of 84 southern emission nebulae by Colin Gum."}, {"n": "Lacerta OB1", "u": "/e/emission-dark-and-reflection-nebulae/lacerta-ob1/", "s": "A nearby OB association with fading star formation and faint nebular filaments."}, {"n": "Van den Bergh Catalog", "u": "/e/emission-dark-and-reflection-nebulae/van-den-bergh-catalog/", "s": "Catalog of reflection nebulae compiled by Sidney van den Bergh."}, {"n": "Lynx Arc", "u": "/e/emission-dark-and-reflection-nebulae/lynx-arc/", "s": "Hottest known star-birthing region, 12 billion light-years away."}, {"n": "MWC 137", "u": "/e/emission-dark-and-reflection-nebulae/mwc-137/", "s": "A massive sgB[e] supergiant at the center of filamentary nebula Sh 2-266."}, {"n": "N119", "u": "/e/emission-dark-and-reflection-nebulae/n119/", "s": "A spiral-shaped H II region in the Large Magellanic Cloud."}, {"n": "NGC 6357", "u": "/e/emission-dark-and-reflection-nebulae/ngc-6357/", "s": "A star-forming nebula in Scorpius, home to massive stars and proto-stars."}, {"n": "NGC 6847", "u": "/e/emission-dark-and-reflection-nebulae/ngc-6847/", "s": "An NGC object with no additional recorded details."}, {"n": "NGC 7380", "u": "/e/emission-dark-and-reflection-nebulae/ngc-7380/", "s": "Young open cluster with the Wizard Nebula in Cepheus."}, {"n": "Pelican Nebula", "u": "/e/emission-dark-and-reflection-nebulae/pelican-nebula/", "s": "An emission nebula shaped like a pelican in Cygnus."}, {"n": "Peripheral nebular regions of the Orion Complex", "u": "/e/emission-dark-and-reflection-nebulae/peripheral-nebular-regions-of-the-orion-complex/", "s": "Outer dust clouds shaped by stellar winds from Orion OB1."}, {"n": "RCW 36", "u": "/e/emission-dark-and-reflection-nebulae/rcw-36/", "s": "A nearby emission nebula with a dense young star cluster."}, {"n": "RCW Catalogue", "u": "/e/emission-dark-and-reflection-nebulae/rcw-catalogue/", "s": "Catalogue of 182 southern Hα-emission nebulae from the 1960s."}]