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Mare Crisium - Sea of Crises
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图注： The image shows the lunar Mare Crisium, the “Sea of Crises,” as seen by NASA’s Lunar Reconnaissance Orbiter in 2015. The photo size is 750 × 750 km, about the size of Germany. Mare Crisium is located in the Moon’s Crisium basin, near the great Mare Tranquillitatis on the near side of the Moon. It is visible from Earth and is characterized by a relatively smooth and flat surface surrounded by cliffs and highlands. The basin that now contains the Mare Crisium was formed by a massive impact event likely during the Nectarian period approximately 3.9 billion years ago. During this time in lunar history, major basins including the Crisium basis were formed by large impact events. Later in lunar history, the basin was flooded by lava to form the dark and flat plain we see today. Its floor is about 1.8 kilometers below the typical lunar surface level. The study of lunar maria provides insights into the volcanic history and impact processes that have affected the Moon and other celestial objects.
来源： NASA, Lunar Reconnaissance Orbiter
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
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6.78 MB)
Record-Breaking Off-Earth Driving: Rovers on Mars & the Moon
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图注： Part of the Simplifying Astronomy for Arabic Speakers project, this infographic highlights the longest distances traveled by rovers on Mars and the Moon, showcasing space exploration’s progress.
Top Rovers & Their Achievements
Mars: NASA’s Opportunity holds the record, covering 45.16 km between 2004–2018.
Moon: The Soviet Lunokhod 2 leads with 39 km, followed by Apollo rovers:
Apollo 17: 35.74 km
Apollo 15: 27.8 km
Apollo 16: 27.1 km
Mars vs. Moon: Different Challenges
1. Martian Terrain – Mars has a thin atmosphere, dust storms, and rugged landscapes, requiring durable, long-term rovers.
2. Lunar Terrain – The Moon’s cratered surface lacks an atmosphere, allowing easier movement but with shorter mission durations.
3. Mission Longevity – Mars rovers operate for years, while Apollo lunar rovers were used briefly.
Future Rovers & Expectations
Curiosity may reach 42.195 km, making it one of Mars' most traveled rovers.
Yutu-2 (China) continues exploring the Moon since 2019.
Conclusion
These record-breaking distances showcase technological advancements in planetary exploration. With continued innovation, future rovers will go even further, paving the way for ambitious human missions beyond Earth!
来源： Ali Al-Edhari ; adapted from the original by NASA/JPL-Caltech
词汇表:
漫游车
分类：
太空探索
语言： Arabic
文字系统： Arabic
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
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1.66 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)
正发生月食的月亮从多洛米蒂山脉（联合国教科文组织世界遗产区）普伦德拉岩峰（Rochetta di Prendera ）附近落下，作者 Alessandra Masi，意大利
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为 OAE 制作
图注： 2021 年国际天文学联合会 OAE 天体摄影比赛月全食类第一名。
月食发生于满月进入地球阴影时。这种现象发生在太阳、地球和月球的排布完全或非常接近一条直线时。月球表面反射的红光是太阳光照射月球途中，穿过地球大气层时发生折射造成的。较蓝的光由于瑞利散射作用消失，因此月球表面呈现红色。地球阴影在月球表面显示出的圆形形状，曾被亚里士多德用作地球是球体的证据之一。这张照片拍摄于2019 年 1 月 21 日，展示了被地球阴影笼罩的月球（月食）在意大利多洛米蒂山脉（联合国教科文组织世界遗产区）普伦德拉岩峰（Rochetta di Prendera ） 附近落下的景象。
来源： Alessandra Masi/IAU OAE
词汇表:
月食 , 月球 , 月全食
分类：
肉眼天文学
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
此文件在 Zenodo 上 ( 图像 4.19 MB)
Waning crescent moon
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图注： The waning crescent moon photographed from the Northern Hemisphere (USA). At this phase, most of the moon's illuminated half is not visible from Earth so only a thin, bright crescent appears.
来源： Stephen Rahn
来源链接
词汇表:
月相 , 残月
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
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( 图像
8.14 MB)
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