The Titan explorer, for example, will be studying a place that - in a crude way, at least - resembles the early planet Earth at a time when life arose here.
比如说土卫六探索号将会用到至少是原始的方法来研究同早期行星——地球出现生命时情况相似的地方。
At the same time, images obtained from Mars orbit revealed the early planet to be more Earth-like, with a broad range of surface environments suitable for life.
同时，从火星轨道上获得的照片显示，早期星球非常类似地球，有很很多地方适合生命。
In Earth's early days, all over the planet countless photosynthetic bacteria performed photosynthesis.
在地球早期，整个星球上有无数的光合细菌在进行光合作用。
So while the latest version of Planet X could certainly exist in theory, it's way too early to start rewriting the textbooks.
因此，最近未知新星体的发现也许从理论上来说确实存在，但是要想改写进教科书，还是太早了。
According to planet formation theory, there was a process of building that went on in the early solar system - smaller planetesimals to larger planetary embryos to actual planets.
根据行星形成理论，在太阳系早期，存在一个形成过程，更小的小行星形成稍大的行星胚胎，最终形成现在的行星。
The planet is probably rocky, Fabrycky said, but any water or atmosphere it may once have had would have evaporated early in its lifetime.
法布瑞基说，行星很可能是由岩石组成的，如果它曾有过水或空气的话，也在早年就蒸发掉了。
Researchers believe that our moon was created when a giant object the size of Mars hit the early Earth, sending out a disc of debris orbiting our planet.
研究学者认为，我们的月球是在一个巨大如火星的物体撞击地球时形成的，碰撞产生圆形的碎屑沿着地球轨道飞行。
Opportunity and sister robot Spirit have been probing the red planet since early 2004, finding evidence of ancient water, and sending breathtaking images across the inner Solar System.
机遇号和她的同胞机器人勇气号自从2004年初就开始探索这颗红色的星球了，找到了古老的水的证据，并且穿越内太阳系发送除了令人窒息的图片。
Unraveling the mysteries of the sun's smallest planet may unlock the secrets of the early solar system.
解开太阳最近行星的神秘面纱将可能解开近太阳系统的秘密。
But 1.2 million years ago, only 18, 500 early humans were breeding on the planet — evidence that there was a real risk of extinction for our early ancestors, according to a new study.
但120万年前，在这颗星球上繁衍的早期人类只有18500人。新的研究认为，这证明我们早期祖先曾遭受了灭顶之灾。
The early stages of the Huronian, from 2.4 to 2.3 billion years ago, seem to have been particularly severe, with the entire planet frozen over in the first "snowball Earth".
Huronian冰河期的早期，也就是从24亿到23亿年前，似乎特别寒冷，整个地球第一次冰冻起来。
An object about the size of mars-half the size of earth-slammed into our planet very early in its formation, the theory says.
这个理论认为，在早期的时候，地球曾经被一颗火星般大小(相当于地球体积的一半)的行星撞击。
Early astronomers thought that our planet was the centre of the universe.
早期的天文学家认为我们的星球是宇宙的中心。
It became the subject of early Separatists attacks during the Clone Wars, with Mon Calamari Commander Merai leading a joint space and surface attack on the planet.
在克隆人战争期间，它成为分离势力早期攻击的目标，蒙卡拉马里人梅赖指挥官对这颗星球发动了空陆联合进攻。
From 2003 to early 2011, you hosted Uranus in your eighth house of other people's money, considered a very difficult place to host the planet of surprise and disruption.
从2003到2011年初，天王星呆在你的第八宫，掌管了其他的人金钱，这是一个非常困难的位置，很难对这个星球产生惊喜和重生。
These metals are heavy, and some geochemists estimate that they should have been shifted to the core of the planet in the early stages of its formation (under the force of gravity).
这些金属都是沉重的，和一些地球化学家估计，它们应该在地球形成的早期阶段，已被转移到它的核心(在重力下)。
The surface of mercury is splattered with craters, the majority being formed in the early days of the solar system when rocky bodies moving at high speeds around the sun collided with the planet.
汞的表面散落的陨石坑，其中大部分是在太阳系形成的早期岩石天体时左右与地球相撞的太阳高速移动。
The two brightest celestial objects of the night sky - the moon and the planet Venus - put on a beautiful display in Wednesday's early morning sky.
夜晚星空中最亮的两个天体——月亮和金星——将在周三清晨的天空中展示出它们优美的姿态。
Some say because the planet appears to have cooled rapidly early in its history, its core has solidified and any magnetic field is a remnant captured in rocks.
一些人说，因为看起来该行星在它形成的早期已经迅速冷却，它的核心已经固化，磁场只是留在岩石中的剩余部分。
The Earth wobble, which has been present since early 2004 due to the nearby presence of Planet X, has steadily become more violent.
地球的抖动从2004年行星X靠近的时候就开始了，现在持续变得越来越猛烈了。
They had gathered in London in the early hours of the morning, hoping to hear the probe broadcasting its signature tune across the vastness of space from the red planet.
他们一大早就聚集在伦敦，期待着能够听到火星探测器从那个红色星球、穿过浩淼的太空发出的信号。
The Mars Reconnaissance Orbiter has been circumnavigating its namesake planet since early 2006.
火星侦察轨道器一直绕着2006年年初以来同名的星球。
Mars is a very energetic planet, and if you begin now, by early June, when swimsuit season starts, you will look fantastic.
火星是一个精力非常充沛的行星，如果你从现在开始锻炼，到明年6月初开始游泳的季节，你看起来会非常迷人的。
If they show evidence of once have been joined, that could really tell us a lot about the early history of the planet geology.
如果它能给出证据证明这些大陆曾经是连接在一起的，它能告诉我们很多关于早期地球地质的信息。
It is possible that such membranous compounds could have arrived on earth as stowaways on the meteorites or comets that pounded the planet during the early history of the solar system.
它意味着这层膜化合物可能来自陨石或慧星。在太阳系形成初期当陨石或慧星与地球相撞时被送到了地球。
50 20th century by the late 60's early surfing skateboarding evolved in the planet and have now become the "cool" of the movement.
20世纪50年代末60年代初由冲浪运动演变而成的滑板运动，在而今已成为地球上最“酷”的运动。
Sidewalk astronomy events will give city-dwellers an excellent opportunity to see the moon, the planet Saturn, and other objects in position for early evening observations.
而其它街头举办的天文学相关活动，也能让都会人享有绝佳机会在傍晚时分观测月球、土星和其它天体。
Only early birds will see the waning crescent moon with the planet Saturn in the wee hours tomorrow on Thursday, November 12.
明天，11月12日，星期四早起的人们会在一段时间内看到新月和土星。
As with the mouse who might dash about and try different positions as the wind picks up the Earth has been more mobile during the early dance with Planet X.
就如老鼠那样，随着风的增强，它试着到处冲撞，尝试不同的方向；
As with the mouse who might dash about and try different positions as the wind picks up the Earth has been more mobile during the early dance with Planet X.
就如老鼠那样，随着风的增强，它试着到处冲撞，尝试不同的方向；
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