探寻仙后座的“龙虾爪”

龙虾爪星云（Sharpless 2-157）是一个横跨仙后座与仙王座的暗淡发射星云。该星云的结构由仙后座OB2星协中的大质量星及其恒星风共同塑造而成。

Luigi La Bella from Melilli, Italy The Lobster Claw Nebula (Sharpless 2-157) is a faint emission nebula straddling the constellations Cassiopeia and Cepheus. This complex of gas and dust has been sculpted by the massive stars of the Cassiopeia OB2 association — including the Wolf-Rayet star WR 157 — whose winds carve its ring-shaped northern Continue reading "Clawing through Cassiopeia" The post Clawing through Cassiopeia appeared first on Astronomy Magazine .