NanoSail - d结束飞行任务三年后，将有另外一个太阳帆发射升空，它由位于加州Pasadena的非营利性组织行星社(The PlanetarySociety)制造。
The NanoSail-D may be followed over the next three years by another solar sail, this one built by the Planetary Society, a nonprofit space advocacy organization in Pasadena, Calif.
此次飞行任务预计在2018年1月5日实行，目的是利用每15年才出现一次的行星连成一线的机会。
The mission has been scheduled for 5 January, 2018, in order to take advantage of an alignment in the planets that occurs once every 15 years.
根据月球研究和行星际飞行任务的需要，为了提高火箭的推重比，要为运载火箭新安装一个第三子级。
Missions for study of the Moon and interplanetary flight required re-equipping the launch vehicle with a third stage to increase its power-mass characteristics.
根据月球研究和行星际飞行任务的需要，为了提高火箭的推重比，要为运载火箭新安装一个第三子级。
Missions for study of the Moon and interplanetary flight required re-equipping the launch vehicle with a third stage to increase its power-mass characteristics.
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