在星际的时间尺度上重复发生星系碰撞将最终导致它们融合为一个恒星星系。
Repeated galaxy encounters on a cosmic timescale can ultimately result in a merger into a single galaxy of stars.
古尔德告诫说，他的团队只是根据有限的数据所做出的“非常粗略”的估计，并很有可能在未来几年内随着其他恒星星系被发现而被改写。
Gould cautioned that his team's "very rough" estimate is based on limited data and is likely to change as other star systems are spotted in the coming years.
我们的太阳系是已知的恒星星系中拥有行星数量最多的，这很可能是由于在其他的恒星周围探测到行星的存在是非常困难的。
Our Solar System has the most planets of any known star, most probably because it is so hard to detect planets around other stars.
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