2017年1月4日 星期三

NASA is visiting 8 asteroids in 8 years. Here are 8 things to know about the missions

NASA announced two new asteroid missions today named Lucy and Psyche that will fill important gaps in our understanding of how the solar system was formed. Here are eight things to know about the two missions.

from Planetary Society Blog http://ift.tt/2hU5Xyx
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