APOD: 2021 February 3 - Found on the Moon: Candidate for Oldest Known Earth Rock

To have rock shrapnel fall onto the moon would take an incredible impact on earth -- the dinosaur destroyer?

Thank you my friend Maj William W. 'Bill' Price for posting the NASA Astronomy Video of the Day (AVOD) is titled "Found on the Moon: Candidate for Oldest Known Earth Rock."

It is unsurprising to me, that a rock 'found' on the moon is a candidate for the oldest known earth rock since the Creator decided to use common designs :-)

Images:
1. Astronaut Edgar D. Mitchell (left) and astronaut Alan B. Shepard Jr. examine lunar samples from their Apollo 14 mission, including the largest sample, the basketball-size rock "Big Bertha."
2. Candidate for oldest known earth rock - found on the moon
3. Close-up of candidate for oldest known earth rock - found on the moon

APOD Background
"Explanation: Was the oldest known rock on Earth found on the Moon? Quite possibly. The story opens with the Apollo 14 lunar mission. Lunar sample 14321, a large rock found in Cone crater by astronaut Alan Shepard, when analyzed back on Earth, was found to have a fragment that was a much better match to Earth rocks than other Moon rocks. Even more surprising, that rock section has recently been dated back 4 billion years, making it older, to within measurement uncertainty, than any rock ever found on Earth. A leading hypothesis now holds that an ancient comet or asteroid impact launched Earth rocks into the Solar System, some of which fell back to the Moon, became mixed with heated lunar soil and other rocks, cooled, and re-fragmented. The video features an internal X-ray scan of 14321 showing multiple sections with markedly different chemistries. Moon rocks will continue to be studied to learn a more complete history of the Moon, the Earth, and the early Solar System. Friday marks the 50th Anniversary of the Apollo 14 landing on the Moon."

Here is a candidate for the oldest rock song:-)

Goree Carter - Rock Awhile (1949)
https://www.youtube.com/watch?v=xZlESMXHFfY
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Good Morning. I seem to remember reading something that there was a theory the Moon itself was a piece of the early Earth that got nailed by a huge asteroid that blew out a huge piece of early Earth which became our Moon. If this indeed did happen, I would think the moon would have lots of the Earth rocks on it if this was the case?