It is what is known as a transiting planet.
这就是所谓的凌日行星。
In systems with more than one transiting planet, astronomers have another option: transit timing variations.
在不止一颗行星凌星的系统中，天文学家有另外的选择：凌星时刻变化（Transit Timing Variation，TTV）。
The Kepler data also give a tantalizing hint of a third transiting planet that sits scorchingly close to the star.
开普勒的数据同时暗示，还有第三颗行星，位于非常靠近恒星的位置，几乎要被烤焦了。
Or they look for tiny dips in a star's brightness - evidence that a planet is transiting, or passing in front of, the star from our perspective.
或者，他们寻找恒星亮度中微小减弱的地方——证明一个行星正在横越或经过从我们的角度所看到的那个恒星。
And we may have to wait a very long time for a planet like Earth to orbit its star twice: Alien astronomers would have to wait two years to observe our planet transiting the sun twice.
而且，我们可能需要等待一个很长的时间才能等到一个类地行星第二次围绕它的恒星作轨道运行：外星系的天文学家们要花两年的时间才能看到两次我们的地球绕太阳运行。
Venus our sister planet, and as I said before ruler of the sign of Libra where Saturn is transiting enters Capricorn.
金星，我们的姐妹行星，进入了摩羯，我之前讲过金星是天平的守护星，土星正在天平运行呢。
Venus our sister planet, and as I said before ruler of the sign of Libra where Saturn is transiting enters Capricorn.
金星，我们的姐妹行星，进入了摩羯，我之前讲过金星是天平的守护星，土星正在天平运行呢。
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