ionization

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仙后座“策”与幽灵状星云

2023年10月28日 The Ghosts of Gamma Cas Image Credit & Copyright: Guillaume Gruntz, Jean-François Bax Explanation: Gamma Cassiopeiae shines high in northern autumn evening skies. It’s the brightest spiky star in this telescopic field of view toward the constellation Cassiopeia. Gamma Cas shar […]

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NGC 1360:知更鸟蛋星云

2023年8月5日 NGC 1360: The Robin’s Egg Nebula Image Credit & Copyright: Dong Liang Explanation: This pretty nebula lies some 1,500 light-years away, its shape and color in this telescopic view reminiscent of a robin’s egg. The cosmic cloud spans about 3 light-years, nestled securely wi

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NGC 1499: 加州星云

2022年10月22日 NGC 1499: The California Nebula Image Credit & Copyright: Stephen Kennedy Explanation: Drifting through the Orion Arm of the spiral Milky Way Galaxy, this cosmic cloud by chance echoes the outline of California on the west coast of the United States. Our own Sun also lies within the

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