太空望远镜拍下了有史以来最清晰的冥王星的照片。
The space telescope has taken the clearest pictures ever of Pluto.
天文学家们知道冥王星和海王卫一拥有几乎相同的体积、质量和密度。
Astronomers know that Pluto and Triton have nearly the same size, mass, and density.
这大约相当于从地球往返冥王星337次的距离。
That's about the same distance as 337 round trips from Earth to Pluto.
你吸入的下一口空气有可能来自比冥王星更遥远的地方。
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。
This transformed our view not only of the solar system but also of the importance of sending a spacecraft to Pluto.
冥王星不属于这两类，因为它离地球太远，体积又小，使得它的真正性质成为一个谜。
Pluto is not included in either category, because its great distance from Earth and its small size make this planet's true nature a mystery.
现在，冥王星可能是个矮行星，但是，亲爱的克莱德，在我书中你仍然是第一个发现行星的美国人。
Pluto may be a dwarf planet now, Clyde baby, but you're still the first American to discover a planet in my book.
按照它们与太阳的距离排列，这些行星分别是水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星。
The planets, in order of their distance from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
它比冥王星更大，并且离太阳更远。
他们决定取消冥王星的行星资格了。
冥王星该不该是颗行星？
按照官方说法，冥王星仍然算不上一颗行星。
哈勃太空望远镜发回相当清晰的冥王星图像。
TheHubble Space Telescope has sent back remarkably detailed images ofPluto. Nasa compared the challenge to trying to see the markings on afootball 40 miles away...
它还揭示了冥王星像地球上一样的季节性变化。
冥王星直径不到1500英里，位于太阳系边缘。
Pluto is less that 1, 500 miles in diameter and lies at the edge of the solar system.
冥王星现在被认定为一颗处于柯伊伯带中的矮行星。
Pluto is now considered a dwarf planet dwelling in the Kuiper belt.
印有“冥王星是一颗行星”字样的T恤衫正在热卖。
在1930年，年轻的天文学家克莱德·汤博发现了冥王星。
In 1930, a young astronomer named Clyde Tombaugh found Pluto.
实际上，特里同的大小和组成都和冥王星接近，说明两者起源相似。
Indeed, Triton is about the same size as Pluto and has a similar composition, suggesting a similar origin.
你们——你们不与火、土、气、水的精灵妥协，将幽冥王国视作敌人。
You-you will make no terms with the spirits of fire and earth and air and water. You have made the Darkness your enemy.
通过向冥王星发射探测飞船，我们能对这些特点有一个更细致的了解。
By sending a spacecraft to Pluto, we'll get much closer look.
后来，这个行星被正式命名冥王星，在一个11岁的英国女孩的建议下。
Later that year the planet was officially named Pluto, on the suggestion of an 11-year-old British lass.
2010年2月是美国天文学家克莱德·汤博发现冥王星的80周年纪念。
February of 2010 marks the 80th anniversary of the discovery of Pluto by American astronomer Clyde Tombaugh.
据行星学家罗宾·卡纳普说，冥王星的所有三个卫星可以追溯回同一次撞击。
According to planetary scientist Robin Canup, all three of Pluto's satellites could trace back to a single impact.
Brown说，“根据我们对冥王星的新认识，我们能从太阳系学到更多。”
We are going to learn so much more about the solar system with our new understanding of what Pluto is.
唯一的另一个已知的以如此奇怪的角度运行的例子是冥王星，直到它降级为矮行星。
The only other known example of such an oddly angled orbit was Pluto, until its demotion to dwarf planet status.
现在归类于矮行星的冥王星是那么小，那么远，对天文学家来说，其表面一直是个谜。
Pluto, now classed as a dwarf planet, is so small and so distant that its surface has been a mystery to astronomers.
美国宇航局发布了哈勃太空望远镜拍摄的图像，显示了冥王星表面不寻常和多彩变化。
Nasa released images taken by the Hubble Space Telescope which revealed some unusual and colourful changes to the surface of Pluto.
它曾一度被划归为行星，冰冷的冥王星目前被认为是我们太阳系的40多个矮行星之一。
Once classified as a true planet, icy Pluto is now considered one of the more than 40 dwarf planets in our solar system.
因此科学家准备用汤博发现冥王星那样的方法，发动人海战术，用肉眼搜寻那些移动的点。
So scientists say they could use plenty of eyes to help scan the pics for things that move-the same way Tombaugh first found Pluto.
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