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First quarter moon
图像
图注： The first quarter moon photographed from the Northern Hemisphere (USA). At this phase half of the moon's illuminated half is visible. This phase is popularly known as half moon.
来源： Stephen Rahn
来源链接
词汇表:
月相 , 弦月 , 弦月
分类：
太阳系
授权许可： CC0 1.0 通用 (CC0 1.0) 公共领域贡献 CC0 1.0 通用 (CC0 1.0) 公共领域贡献 图标
文件
( 图像
1.37 MB)
Last quarter moon
图像
图注： This shows the last quarter moon photographed from the Northern Hemisphere (USA). During this phase half of the moon's illuminated half is visible. This phase is popularly known as half moon.
来源： Stephen Rahn
来源链接
词汇表:
月相 , 弦月 , 弦月
分类：
太阳系
授权许可： CC0 1.0 通用 (CC0 1.0) 公共领域贡献 CC0 1.0 通用 (CC0 1.0) 公共领域贡献 图标
文件
( 图像
1.11 MB)
Waning gibbous to last quarter
图像
图注： Three images of the moon from the waning gibbous phase (left) to the last quarter phase (right) taken from the Southern Hemisphere (New Zealand). The illuminated area visible appears to shrink as the images progress.
In the last phase visible here (the last quarter) only half of the moon's illuminated half is visible. This phase is popularly known as half moon.
来源： Dave Young / dcysurfer
来源链接
词汇表:
月相 , 弦月 , 亏凸月 , 弦月
分类：
太阳系
授权许可： 知识共享许可协议 Attribution 2.0 Generic 知识共享许可协议 Attribution 2.0 Generic 图标
文件
( 图像
1.45 MB)
Moon map from the NASA Clementine mission
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图注： A map of the Moon's surface constructed of images taken by the BMDO/NASA Clementine mission. The center of the image corresponds roughly to the center of the full moon. This map is a projection of the spherical moon onto a flat surface so the regions around the poles appear distorted, just as Antarctica appears distorted on a map of the Earth.
The large, dark patches in the center of the image are maria (singular mare). These are named after the Latin word for sea but they are not oceans like we have on Earth. Instead they are vast plains of basalt formed by lava that flowed out of volcanos on the moon billions of years ago. They appear darker and smoother than the older, lighter lunar highlands.
来源： USGS Astrogeology Science Center;
来源链接
词汇表:
月球 , 月海
分类：
太阳系
授权许可： 公共领域 公共领域 图标
文件
( 图像
302.21 kB)
First quarter moon
图像
图注： The first quarter moon photographed from New Zealand. As half of the moon's illuminated half is visible, this is phase is popularly know as half moon.
来源： Dave Young / dcysurfer
来源链接
词汇表:
月相 , 弦月 , 弦月
分类：
太阳系
授权许可： 知识共享许可协议 Attribution 2.0 Generic 知识共享许可协议 Attribution 2.0 Generic 图标
文件
( 图像
896.76 kB)
