Sh2-140 vs Sh2-132
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Sh2-140
Sh2-140 is an emission nebula and H II region in the constellation Cepheus, catalogued in Stewart Sharpless's list of Galactic hydrogen-emission regions. Located roughly 3,000 light-years from Earth, it forms part of a molecular-cloud complex where radiation from young, hot stars ionizes surrounding gas. Its bright rim and adjoining photodissociation region are studied to examine star formation an...
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Sh2-132
Sh2-132, commonly known as the Lion Nebula, is a large emission and diffuse nebula located in the constellation Cepheus. It is situated within the Cep OB1 stellar association, an active region of star formation. The nebula's complex gas structures are partly ionized by highly luminous Wolf-Rayet stars and massive O-type giants, producing the striking visual contrast of glowing gas and dark dust fi...
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