地球有一个卫星。
Scientists already suspect the red planet has water.
科学家已经猜测这颗红色的行星上有水。
Fortunately, the planet has not yet reached that impasse.
幸运地是，我们的星球还未达到那样的僵局。
The next step for astronomers is to find out if the diamond planet has rings.
下一步天文学家试图找到这颗钻石行星是否有行星环。
This planet has three suns, with the main star similar in mass to our own sun.
这颗行星有三个太阳，主恒星质量与我们的太阳相似。
The planet has a relatively thin atmosphere composed mostly of nitrogen and oxygen.
这颗行星有相对较薄的大气层，主要由氮气和氧气组成。
Every other person on the planet has his first amorous kiss before reaching the age of 14.
这个地球上，每两个人中就有一个人在14岁之前有了初吻。
The race is now on to detect whether the planet has an atmosphere and whether it contains water.
现在要加紧做的是探测这颗行星是否有大气层以及大气层中是否含有水分。
It is also concerned with the organisms of the planet and how the planet has changed over time.
地质学的研究内容还涉及地球上的生物以及地球的变化。
When a planet transits its parent star, starlight passes through its atmosphere (if the planet has one).
一颗行星横越其母星时，星光会穿过其大气层(如果它有大气层的话)。
How can you imagine that every person on this planet has the same requirements for happy and balanced living?
能否想象，世间所有人都对健康和平衡的生活有相同要求？
Over the past 32 years, every conceivable aspect and area of the planet has been documented in increasingly vivid detail.
在过去的三十二年间，地球上所有能想象得到的画面和区域都被越来越细致入微的记录了下来。
However, just because anyone on this planet has the potential to achieve success, doesn't mean that anyone else actually will.
但是，仅仅由于我们这个星球上的任何人都有获得成功的潜质，并不意味着他们便真能成功。
Indeed, just landing safely on Mars has to be considered a success, since the red planet has a way of devouring space missions.
事实上，仅仅是安全地在火星表面着陆就已经算是成功了，因为这颗红色的行星经常吞噬掉太空探测器。
A NASA satellite circling the red planet has snapped the first pictures ever taken of a landslide happening on another world.
美国国家航空航天局(NASA)的火星环绕卫星最近拍摄到一起发生在火星上的山崩事件，这是人类首次看到来自另一世界的山崩事件。
Atomic energy has just been subjected to one of the harshest of possible tests, and the impact on people and the planet has been small.
在所有的能源技术里，核能源所经受的测试可能是最严厉的，而迄今为止，它对人类和地球的影响很小。
Dr Hazen argues that considering minerals in evolutionary terms is a powerful way to help identify how far a planet has developed geologically.
海森博士认为，考虑矿物的进化特性是确定行星的地质演化时间的有效手段。
If the planet has an atmosphere like ours, it would need about 50 percent cloud cover to stay cool enough for liquid water to exist on the surface.
如果这颗行星有跟我们一样的大气层，就需要覆盖大约50%的云层来保持它足够凉，这样液态水才能在行星的表面存在。
Our planet has been getting along just fine for more than 4 billion years, and credible scientists worldwide know of no threat associated with 2012.
地球已经完好的运转了超过40亿年，世界范围内可信的科学家都知道2012年并不会有任何危险。
If this miniature eclipse is repeated at regular intervals, for the same length of time, then the odds are that an orbiting planet has been detected.
如果在一段时间内，这种微小的光线变化以固定的频率重复发生，就有很大的可能侦测到存在环绕它运行的行星。
Our planet has always harbored water. The rubble that coalesced to form Earth contained trace amounts—tens to hundreds of parts per million—of the stuff.
虽然地球上的岩石或多或少都含有一定量的水，但是科学家认为这些水不足以形成今天的海洋，因此他们将目光转向太空，去寻找海洋的起源。
The measurements suggest the planet has slightly more mass than Jupiter but is 20 times as dense, Bailes and colleagues reported in the journal Science on Thursday.
贝尔斯与其同事在上周四三(25日)的《科学》杂志上发表报告指出，这颗钻石行星的质量比木星稍大一些，密度却是木星的20倍。
The best-known such event was the one that wiped out the dinosaurs 65m years ago, but that was not the worst; the planet has suffered several such large mass extinctions
这类事件中最著名的一个就是6500万年前恐龙的灭绝，但这还不是最坏的；这个星球已经经历了几次如此大规模的灭绝。
That means that, even if the planet has terrestrial moons, they likely wouldn't be able to stand the extreme temperature swings that go along with Epsilon Eridani b's eccentric orbit.
这意味着，即使这个星球有类似地球的卫星，它们也不可能承受得了天苑四b椭圆轨道带来的极端温度变化。
That means that, even if the planet has terrestrial moons, they likely wouldn't be able to stand the extreme temperature swings that go along with Epsilon Eridani b's eccentric orbit.
这意味着，即使这个星球有类似地球的卫星，它们也不可能承受得了天苑四b椭圆轨道带来的极端温度变化。
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