A Hubble Space Telescope image shows "proplyds, " or protoplanetary disks, in the Orion Nebula.
这是哈勃望远镜拍摄到的猎户星云中的原行星盘(proplyds，protoplanetary disks)。
The study represents "a major advance in our understanding of protoplanetary disks and their evolution, " Watson says. And astronomer Zoltan Balog of the Steward Observatory.
沃森说：“在对原行星盘及其演化情况的理解上，该研究取得了较大的进展。”亚利桑那州图森史都华天文台。
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