The bizarre configuration could have been caused by the chance capture of material from a passing galaxy by the disk galaxy, with the captured debris strung out in a rotating ring.
这种奇怪的设置可能是由于盘状星系捕获了途径的星系中的物质，而被捕获的物质形成了这个旋转的环形所致。
2
A rare galaxy type, polar ring galaxies have a substantial population of stars, gas, and dust orbiting in rings nearly perpendicular to the plane of the galactic disk.
极环星系是种稀有的星系类型，它们有着几乎和银盘平面垂直，呈环形公转的大量的恒星、气体和星尘。
3
As he turned back the clock, the dust disk collapsed into a dense, bright ring.