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- West crater is a small crater in Mare Tranquillitatis on the Moon, east of the Apollo 11 landing site, which is known as Tranquility Base. The name of the crater was formally adopted by the IAU in 1973. The Apollo 11 astronauts Neil Armstrong and Buzz Aldrin landed the Lunar Module (LM) Eagle approximately 550 meters west of West crater on July 20, 1969. During the descent, West crater was a major landmark. The lunar lander flew over the crater at an altitude of about 100 meters. The boulder field that Armstrong saw a need to avoid during the descent was the ejecta of West crater. Just beyond this ejecta was Little West crater which also had to be avoided. At the time of Apollo 11, the words “east” and “west” were used to describe directions on the Moon from the perspective of an observer on Earth. The crater was therefore named “West Crater” even though it appears to the east of the landing site on modern lunar maps. (en)
- 西坑（West）是月球静海中的一座小陨石坑，它位于被称为“静海基地”的阿波罗11号着陆点以东，其名称在1973年被国际天文联合会正式接受。 1969年7月20日，阿波罗11号宇航员尼尔·阿姆斯特朗和巴兹·奥尔德林乘坐阿波罗“鹰号”登月舱降落在西坑以西约550米处，在下降过程中，西坑是一个主要的地标。阿姆斯特朗曾说下降过程中需要避开西坑的喷出物-巨石场。 (zh)
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- Astronaut-named feature (en)
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- 西坑（West）是月球静海中的一座小陨石坑，它位于被称为“静海基地”的阿波罗11号着陆点以东，其名称在1973年被国际天文联合会正式接受。 1969年7月20日，阿波罗11号宇航员尼尔·阿姆斯特朗和巴兹·奥尔德林乘坐阿波罗“鹰号”登月舱降落在西坑以西约550米处，在下降过程中，西坑是一个主要的地标。阿姆斯特朗曾说下降过程中需要避开西坑的喷出物-巨石场。 (zh)
- West crater is a small crater in Mare Tranquillitatis on the Moon, east of the Apollo 11 landing site, which is known as Tranquility Base. The name of the crater was formally adopted by the IAU in 1973. At the time of Apollo 11, the words “east” and “west” were used to describe directions on the Moon from the perspective of an observer on Earth. The crater was therefore named “West Crater” even though it appears to the east of the landing site on modern lunar maps. (en)
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- West (lunar crater) (en)
- 西坑 (zh)
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