Now that we know there's another moon in the Pluto system, we can plan close-up observations of it during our flyby.

既然我们知道了冥王星系统中还有一颗卫星，我们就可以在飞越那儿时好好规划一下距离观察。

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The Hubble observations were made while searching for faint rings around the distant world in support of NASA's New Horizons mission, set to fly by the Pluto system in 2015.

哈勃的观测目的是找出冥王星周围的暗淡环状物，为美国宇航局“ 新视野号”太空探测器2015年抵达冥王星做准备。

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This transformed our view not only of the solar system but also of the importance of sending a spacecraft to Pluto.

这不仅改变了我们对太阳系的认识，也使我们意识到向冥王星发射飞船的重要性。

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These two recent discoveries show that the Pluto system is more crowded than scientists had thought.

MSN: New Pluto moon hints at perilous journey for spacecraft

Stern and his colleagues are inventorying the Pluto system with Hubble to get a better handle on the risks New Horizons faces, and to help design the safest possible trajectory for the spacecraft.

MSN: New Pluto moon hints at perilous journey for spacecraft

And water would be all the more exciting on Ganymede because it is the largest moon in the solar system (larger even than the planets Mercury and Pluto) and, like earth, it has a permanent magnetic field that protects part of its surface from bombardment by certain sorts of life-destroying radiation.

ECONOMIST: Blue moon