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The moon has a lot of looks. And each one happens for a reason.
月亮有很多种面貌，而每一种背后都是有原因的。
It takes the moon about 29 and a half days to orbit around the Earth.
月球绕地球公转的周期约为29天半。
And during this time, the sun illuminates the moon from varying angles which creates a shadow effect that we see here on Earth.
在此期间，太阳从不同角度照亮月球，从而就有了我们在地球上看到的阴影效果。
At the start of each lunar cycle, the moon is between the earth and the sun.
在每个周期开始时，月球处于地球和太阳之间。
This is called a “New Moon”.
这时候的月亮称之为“新月”。
The side of the moon visible from Earth is not illuminated and therefore we can’t see it.
月球靠近地球的一侧没有被照亮，所以我们才看不见月亮。
As the angle between the Moon and the Sun increases, so does the amount of moon we’re able to see.
随着月亮和太阳之间的角度变大，我们能够看到的月亮的面积越来越大。
After the new moon, it enters the waxing crescent phase where we can see 1 to 49% of the moon.
新月之后，月亮进入“蛾嵋月”位相，这个阶段我们能看到月亮的1％到49％。
When it reaches 50% illumination, it becomes a first quarter moon, which is kinda confusing but we’ll roll with it.
当可见度达到50％时，它就变成了“上弦月”，虽然还是有点儿让人莫名其妙，这里我们先把这个问题放一放。
Next is the waxing Gibbous phase, which means we can see about half to almost all of the moon.
接下来是盈凸阶段，这也意味着我们可以看到一半左右到将近整个月亮。
And finally… we get to see the big cheese.
终于......我们看到大满月了。
We get one glorious night of full moon and then the illumination starts to fade.
光辉灿烂的满月之夜终于来临，此后，月亮的亮度又开始逐渐消退。
After a full moon, we see the waning phase which is the opposite of waxing.
满月之后就是与渐盈相反的渐亏阶段。
The moon follows the same illumination pattern just flipped with the final phase being the waning crescent.
这个阶段，月亮的明暗模式不变，只不过和渐盈阶段反了个方向，结束时变成了“残月”。
Then it starts all over again with the new moon!
之后月亮重新进入回到新月状态！
The way you see the moon depends on where you are on the globe.
你看到的月亮的模样跟你在地球上所处的位置有关。
If you’re in the Northern Hemisphere,
如果你是在北半球，
a waxing moon will be illuminated on the right side while a waning moon will be illuminated on the left.
那渐盈凸月被照亮的就是右侧，而渐亏凸月被照亮的是左侧。
It’s the opposite in the Southern Hemisphere.
南半球的情形则与北半球恰好相反。
So now you know, the next time you see a waxing moon, a full moon is right around corner.
所以现在你知道了吧，下次看到渐盈凸月的时候，就表示满月已经不远了。
You can catch new episodes of Space Crafts every Wednesday!
每周三大家都可以收看新一期的《宇宙飞船》节目！
In this episode, we'll explain what happens when the Sun explodes and the potential fallout for Earth.
在接下来的这一集中，我们将解释太阳爆炸的情形及其可能对地球造成的影响。
Thanks for watching and make sure to subscribe!
感谢您的收看，记得订阅噢！
