以星团 Westerlund 2 为核心的星云 Gum 29 的三维立体. 从哈勃太空望远镜: “The flight traverses the foreground stars and approaches the lower left rim of the nebula Gum 29. 经过细细的深色云彩上的近侧, 旅程揭示了由 Westerlund 2 星团新形成的恒星的强烈辐射照亮的明亮气体. 在星云, 黑暗的几个支柱, 从成千上万的星星辉煌群集高能的光和强烈恒星风所孕育的稠密气体. Note that the visualization is intended to be a scientifically reasonable interpretation and that distances within the model are significantly compressed.”