NGC2818是银河系中少数几个位于疏散星团内部的行星状星云之一。
NGC 2818 is one of very few planetary nebulae in our galaxy located within an open cluster.
疏散星团动力学及形成过程的研究对于恒星动力学理论和银河系恒星形成理论具有重要意义。
Studies of the dynamics and formation process of open clusters are of great significance for stellar dynamics and star formation in the Galaxy.
球状星团与疏散星团年龄相比要老得多，表明它们是在银河系形成初期形成的恒星系统。
It also shows that all globular clusters in our Galaxy are very old, much older than the oldest open clusters in the Galactic disk.
球状星团与疏散星团年龄相比要老得多，表明它们是在银河系形成初期形成的恒星系统。
It also shows that all globular clusters in our Galaxy are very old, much older than the oldest open clusters in the Galactic disk.
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