Rock on a planet is also important.
行星上的岩石也很重要。
After many years of scrutinizing, astronomers have found a planet that is similar to the Earth.
经过多年的仔细研究，天文学家发现了一颗与地球相似的行星。
Venus has long been held up as a cautionary tale for everything that could go wrong on a planet like earth.
长期以来，金星一直被认为是一个警示故事，告诉我们在像地球这样的行星上，任何事情都可能出错。
If there are so many stars out there, that means there might also be a planet just like the planet we live on.
如果那里有那么多星星，那就意味着可能也有一颗和我们居住的行星一样的行星。
Simply stated, a gas molecule can "evaporate" from a planet if it reaches a speed known as the escape velocity.
简单地说，如果气体分子达到逃逸速度，它就能从一颗行星上“蒸发”。
When a large body strikes a planet or moon, material is ejected, thereby creating a hole in the planet and a local deficit of mass.
当一个大型天体撞击行星或月球时，物质会被抛射出去，从而在行星上形成一个洞，造成局部质量不足的现象。
Since the lifetime of a planet like ours is several billion years, we can expect that, if other civilisations do survive in our galaxy, their ages will range from zero to several billion years.
由于我们这样的行星的寿命是几十亿年，我们可以预测，如果我们星系中有其他生物生存，它们的年龄将从零到几十亿岁不等。
Extracting information about the large-scale composition of a planet from a sample weighing a millionth of a gram was a fascinating example of scientific endeavour.
从重量为百万分之一克的样品中提取有关行星宏观组成的信息是一个极为有趣的科学尝试实例。
It was way too faint to be a planet.
它太暗了，不可能是行星。
It is a planet that could support life.
这是一颗可以维持生命的行星。
Now, I understand that you are from a planet called Zadernol.
我知道你来自一个叫扎德诺尔的星球。
Mars is a planet and is the fourth closest planet to the Sun.
火星是一颗行星，是离太阳第四近的行星。
It's China's first probe to land on a planet other than Earth.
这是中国首个在地球以外的星球着陆的探测器。
Last month, a space agency told the public that they were looking for "a planet protection officer."
上个月，一家航天局对公众宣称，他们正在寻找“行星保护官”。
Pluto may be a dwarf planet now, Clyde baby, but you're still the first American to discover a planet in my book.
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。
It will nevertheless resemble us in that it should communicate with its fellows, be interested in the Universe, live on a planet orbiting a star like our Sun.
但是它仍然与我们相似，因为它应该也与它的同伴交流，对宇宙感兴趣，生活在一个行星上，这个行星也绕着像是太阳一样的恒星运转。
冥王星该不该是颗行星？
Officially, Pluto is still not a planet.
按照官方说法，冥王星仍然算不上一颗行星。
That of a laboratory or that of a planet?
是实验室级别的还是全球性的？
They've decided that Pluto is not a planet anymore!
他们决定取消冥王星的行星资格了。
Sales of "Pluto is a Planet" T-shirts are high.
印有“冥王星是一颗行星”字样的T恤衫正在热卖。
It's a planet. It's Venus, if I recall correctly.
它只是颗行星，金星，我没记错的话。
Could a planet have a moon that itself had a smaller moon?
行星能有一个自身带有一个更小卫星的卫星吗？
But WD 0806-661 B is not a planet - it's a very small star.
但是WD 0806- 661B号星球并不是一颗行星——而是一颗非常小的恒星。
The bigger the hull the less turns it takes to colonize a planet.
船体越大，拓殖一个星球的机会也就越少。
No wonder we're looking so hard for a planet more like Earth.
所以我们才那么努力的寻找类似地球的行星。
No wonder we're looking so hard for a planet more like Earth.
所以我们才那么努力的寻找类似地球的行星。
应用推荐