许多天文学家对这个前景感到十分不安，Stern说，而那样的不安也是当初决定将冥王星降级的重要因素之一。
Many astronomers were uncomfortable with this prospect, according to Stern, and that discomfort was a big factor in the decision to demote Pluto.
综述了中国射电天文观测和研究状况，展望射电天文观测和研究的前景。
The status of radio astronomy observation and research status in China is summarized, and the foreground of radio astronomy observation and research is previewed.
天文学家使用哈勃区分两种运动的核心人口从前景是银河系中星星。
Astronomers used Hubble to distinguish the motion of the core population from foreground stars in the Milky Way.
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