从地月系L1点晕轨道向月球圆停泊轨道具有多种零消耗转移轨道，但不同轨道的能耗和转移时间等指标不尽相同；
There are many kinds of zero-cost transfer trajectories from L1 to round parking orbits, but the energy cost, time cost of different trajectories are also different.
2007年9月发射的曙光号一直在成为第一个进入地球之外两个太阳系系统目的地的轨道的路上。
Dawn, which launched in September 2007, is on track to become the first spacecraft to orbit two solar system destinations beyond Earth.
《每日科学杂志》(2010年12月20日)——研究表明微量的水创造了地球和其他类地行星上的海洋,包括那些在太阳系以外的类地行星。
ScienceDaily (Dec. 20, 2010) —Study suggests that trace amounts of water created oceans on Earth and other terrestrial planets, including those outside the solar system.
2011年9月29日。美国航空航天局举行一个会议更新在我们的太阳系中，有关近地小行星的数据库信息，由广角红外线探测望远镜（WISE）跟踪的。
Sept. 29, 2011. NASA held a conference for updating information about the database of near-Earth asteroids in our solar system, tracked by Wide-field Infrared Survey Explorer (WISE) telescope.
最后，对潮汐韵律层在推测地史时期地-月系的演化历史中的意义作了评述。
Finally, the implications of tidal rhythmites for the Earth's rotation and the history of the Earth-Moon system in geological past are concluded.
最后，对潮汐韵律层在推测地史时期地-月系的演化历史中的意义作了评述。
Finally, the implications of tidal rhythmites for the Earth's rotation and the history of the Earth-Moon system in geological past are concluded.
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