Why it took the US 51 years to get back on the moon
Briefly

For the first time since 1972, the United States is back on the moon. At 6:23 p.m. Eastern time Thursday, Intuitive Machines Inc. landed a robotic spacecraft on the moon.
The moon is a harsh environment. It's difficult to design spacecraft that can navigate its surface and it's almost impossible to recreate those situations on Earth for testing.
Read at www.mercurynews.com
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