In comparing the magnetic fields of the two planets, scientists now think the extreme orientation may be characteristic of flows in the planets' interiors.
按照分析,两颗行星上阻止碳酸盐形成的关键都是在于铁的某种化合物或盐。
Key to preventing carbonates from forming on both planets, according to the analysis, are certain concentrations of iron and sulfates, or salt.
但两颗行星之间的距离因环绕太阳的运行而时刻发生着变化。
But the distance between the two planets is constantly changing as they travel around the sun.
这张相片拍照于这两颗行星简直处于敌对状况时--它们离地球最近的点。
The images were taken when the two planets were almost at opposition- their closest points to Earth.
那是两颗行星在近6万年以来靠得最近的时候。
This was the closest the two planets had come to each other in almost 60,000 years.
像地球一样,金星的核心至有一部分是液体,因为这两颗行星冷却的速率是相同的。
Like that of Earth, the Venusian core is at least partially liquid because the two planets have been cooling at about the same rate.
这种协调的关系被称为1:2共振,它使两颗行星能够以这种方式运行。
That harmony, known as a 1:2 resonance, keeps the two planets out of each other's way.
多数理论认为,月球物质主要形成于忒伊亚行星,但是这项最新研究表明月球实际上是两颗行星的混合体。
Most theories suggest the moon formed mainly from Theia, but the new study suggests it was actually a mixture of the two planets.
由于大多数地球被水覆盖着海洋,陆地表面上差不多的这两颗行星的数量。
Because so much of Earth is covered by oceans, the amount of land surface of the two planets is nearly equal.
当然,之前计算的问题之一便是它测量的是两颗行星的直线距离。
Of course, the problem with the previous calculations is that they measure distance between the two planets as a straight line.
多数理论认为,月球物质主要形成于忒伊亚行星,但是这项最新研究表明月球实际上是两颗行星的混合体。
It was previously thought that the moon was formed mainly from Theia, but new data suggests it was a mixture between the two planets.
首先,要确定达到火星需要多长时间,我们必须先了解两颗行星之间的距离。
To determine how long it will take to reach Mars, we must first know the distance between the two planets.
如果它们的轨道是共面的,那么这两颗行星一定是处于2:1轨道共振,否则这个系统就会不稳定。
Assuming the orbits of the two are coplanar, then the two planets must be locked in a 2:1 orbital resonance, otherwise the system would become dynamically unstable.
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