The spacecraft will enable scientists to study some dark corners of the solar system.
太空船使得科学家可以研究太阳系中一些不为人知的角落。
If the solar system has an underachiever, it has to be Venus.
如果太阳系有一个后进生，那一定是金星。
The Moon's spin and tilt are unique among other planetary bodies in the solar system.
月球的自转和倾斜在太阳系的其他行星体中是独一无二的。
Scientists have launched many spaceships to explore other planets in the solar system.
科学家们已经发射了很多宇宙飞船去探索太阳系的其他行星。
That makes it the biggest known crater in our solar system and it may well be the oldest.
这使它成为太阳系中已知最大的陨石坑，也可能是最古老的陨石坑。
For more than 300 years, we thought Saturn was the only body in the solar system with rings.
在300多年的时间里，我们一直认为土星是太阳系唯一拥有光环的天体。
If we want to survive as a species, we have to expand into the solar system and likely beyond.
如果我们希望作为一个物种生存下去，就必须扩张到太阳系之中或超越太阳系。
The solar system also has two analogous classes of objects, smaller than planets—namely, asteroids and comets.
太阳系也有两类类似的物体，比行星还小——即小行星和彗星。
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。
They will serve as modern Magellans, mapping out the solar system for whatever explorers follow, whether man or machine.
他们将作为现代麦哲伦人，绘制出太阳系的蓝图，无论探险者是人类还是机器。
I wanna go over the different types of meteorites, and what we've learned from them about the formation of Earth, and the solar system.
我将介绍陨石的不同类型，以及我们能够从中了解到的有关地球和太阳系的形成的知识。
Of course, we now know that the planets, including Earth, revolve around the Sun, and that the solar system is only a tiny part of the universe.
当然，我们现在知道，包括地球在内的行星都围绕太阳公转，而太阳系只是宇宙的一小部分。
The nearly circular orbits of planets in our solar system led scientists to expect that planets around other stars would also reside in circular orbits.
在我们的太阳系中，行星的轨道几乎是圆形的，这使得科学家们预测，其他恒星周围的行星也会位于圆形轨道上。
The surface of Mars shows a wide range of geologic features, including huge volcanoes—the largest known in the solar system—and extensive impact cratering.
火星表面显示出广泛的地质特征，包括巨大的火山——太阳系中已知的最大的火山——和广阔的撞击坑。
An estimated 99.85 percent of the mass of our solar system is contained within the Sun, while the planets collectively make up most of the remaining 0.15 percent.
太阳占据了太阳系总质量的大约99.85%，而在剩余的0.15%中，行星占据了大部分。
The orderly nature of our solar system leads most astronomers to conclude that the planets formed at essentially the same time and from the same material as the Sun.
我们太阳系的有序特性使大多数天文学家得出结论，这些行星基本上在同一时间形成，且物质来源和太阳的一样。
Far from the sun, in the outer solar system, beyond Jupiter's orbit, temperatures are low enough to permit ices to form out of water and out of gases like methane and carbon dioxide.
在远离太阳的外太阳系，在木星轨道之外，温度低到足以使冰从水以及甲烷和二氧化碳等气体中形成。
Paradoxically, while the temperatures required for liquid water exist only in the inner solar system, the key building blocks of life, including water itself, occur primarily beyond the asteroid belt.
矛盾的是，虽然液态水所需的温度只存在于太阳系内部，但生命的关键组成部分，包括水本身，却主要存在于小行星带之外。
Newton didn't limit himself to explaining the solar system.
牛顿没有固步自封，没有仅限于解释太阳系。
With luck, robotic exploration of the solar system will continue.
幸运的话，机器人对太阳系的探索还将继续。
And the universe outside our solar system seems to abound with potential homes.
太阳系外茫茫宇宙之中，似乎充满了可能的生命家园。
But we shouldn't scrap plans to explore the planet and its solar system just yet.
但我们也不用因此就放弃探索这个行星和其恒星系的计划。
The sun lies at the heart of the solar system, where it is by far the largest object.
太阳位于太阳系的中心，也是太阳系中最大的天体。
Just beneath its equator is a truly grand canyon that also sets a solar system record.
它的赤道之下即是创太阳系之最的大峡谷。
Indeed, something similar may have happened in a solar system just 50 light-years away.
的确，就在50光年之外的一个恒星系统中，可能发生过类似的情况。
Astronomers have found nearly 500 exoplanets - or planets outside our own solar system.
天文学家已经发现了将近500颗太阳系以外的地外行星。
Astronomers have detected more than 400 planets orbiting stars beyond our solar system.
天文学家已经探测到太阳系外超过四百颗环绕恒星运行的行星。
Astronomers have detected more than 400 planets orbiting stars beyond our solar system.
天文学家已经探测到太阳系外超过四百颗环绕恒星运行的行星。
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