They likely formed before the disk of our Milky Way, so they are older than nearly all other stars in our galaxy.

他们很可能在我们的银河系大圆盘出现之前就已经形成，所以他们几乎比我们银河系的所有恒星都要古老。

youdao

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。

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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。

youdao

The simulation detailed in the new paper is based on a sphere centered on our sun that stretches through the disk of our Milky Way galaxy out to a distance of almost a 1000 light years.

FORBES: Free-Floating, Nearby Black Holes Detectable By Decade's End, New Study Reports

The researchers tested their attack against a Samsung Galaxy Nexus handset as it was one of the first to use Android's disk encryption system.

BBC: Frozen Android phones give up data secrets