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。
Gravitational tidal interactions with other members of its group have likely caused the spiral arms of NGC 3190 to appear asymmetric around the center, while the galactic disk also appears warped.
与星系群其它星系之间相互作用的引力潮可能导致了NGC 3190的旋臂不对称地环绕中心，而星系盘也出现了扭曲。
The initial uniform magnetic field will wind into the spiral structures in the galactic disk, in which the magnetic field and the interstellar gas are frozen together.
初始均匀的磁场将缠卷而在星系盘中形成螺旋形的结构，其中磁场和星际气体是冻结在一起的。
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