1.The Pleiades nebulosity is caused by a chance encounter between an open cluster of stars and a molecular cloud.
昴星团是在一次偶然的机会下，由一个疏散星团与一个分子星云遭遇而形成的。
2.Researchers had known the cluster was encountering a gas cloud, because off striking nebulosity that envelopes the cluster?
研究员知道云团就是气体云接触，由于冲击星云包裹了云团？
3.Images of NGC 3132 reveal two stars close together within the nebulosity, one of 10th magnitude, the other 16th.
在NGC3132朦胧的影像中显示有两颗紧密靠在一起的恒星，一颗的视星等是10等，另一颗是16等。