rjxie 发表于 2003-8-10 13:24

[酷动画] 月亮的盈亏变化。

http://antwrp.gsfc.nasa.gov/apod/image/9911/lunation_ajc.gif

Lunation
Credit & Copyright: António Cidadão
Explanation: Our Moon's appearance changes nightly. This time-lapse sequence shows what our Moon looks like during a lunation, a complete lunar cycle. As the Moon orbits the Earth, the half illuminated by the Sun first becomes increasingly visible, then decreasingly visible. The Moon always keeps the same face toward the Earth. The Moon's apparent size changes slightly, though, and a slight wobble called a libration is discernable as it progresses along its elliptical orbit. During the cycle, sunlight reflects from the Moon at different angles, and so illuminates different features differently. A full lunation takes about 29.5 days, just under a month (moon-th).

黄旻炜 发表于 2003-8-13 14:16

有远近变化哈，很直观的

portiff 发表于 2003-8-13 20:10

酷极了！

14岁女孩 发表于 2003-8-21 10:39

可以看见天平动了!

puu990625 发表于 2003-8-22 21:02

可以让我的小孩看一下

ak49 发表于 2003-8-24 10:40

终于看到了。。。就是忒快了些。。。

望天 发表于 2003-8-25 21:18

自己调慢些

ak49 发表于 2003-8-25 21:23

谢谢。︿＿︿。
俺不会玩儿动画。

蛋蛋 发表于 2003-9-1 17:40

好棒好棒啊
你是怎么弄的啊？

eggwithfork 发表于 2009-10-15 08:42

::makefaces::谢谢分享~~~
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