To what geological period does the age of the SPA basin formation trace back?

Answer

The early bombardment period of the inner Solar System

The formation age of the SPA basin places it deep in the Moon's past, suggesting it is an imprint from the early bombardment period affecting the inner Solar System.

To what geological period does the age of the SPA basin formation trace back?

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The Massive Chunk of Metal Hiding in the Moon - YouTube

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