The Surveyor 5 reference article from the English Wikipedia on 24-Apr-2004
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Surveyor 5

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Surveyor 5 was the fifth lunar lander of the Surveyor program that explored the Moon.

A total of 19,049 images were transmitted to Earth.

The mission experienced a helium leak that could have resulted in failure. An improvised landing sequence was successful and data was received for 2 weeks after the landing. A miniature chemical analysis lab using an alpha particle backscatter device was used to determine the lunar surface soil consisted of basaltic rock.