此发现证实了一个天文学家小组先前获得的观察：银河系有两条主要的螺旋臂，是一个普通中心带有横条的星系结构。

The findings confirm an earlier observation by a team of astronomers, making a strong case that the Milky Way has two major spiral arms, a common structure for galaxies with bars.

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天文学家们通过窥视螺旋臂，认为较短的蓝色银河是在较长波长的银河里打出了一个洞。

Astronomers think the smaller blue galaxy peeking through the spiral arms may have actually punched a hole in the larger galaxy.

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这些相同的研究能揭示出更多关于银河系的结构和解决银河系是有两个或是四个漩涡臂的问题。

Some of these same studies could also reveal more of the Milky Way's structure and settle the question of whether our galaxy contains two or four spiral arms.

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