The research of an international team of scientists revealed that the sample contains a fragment of ancient bark, which scientists believe, it is likely that they have formed deep under the surface of the Earth.
Published in the Earth and Planetary Science Letters magazine, the analysis found that the rock consists of quartz, feldsparo and zircon, which are very common in the Earth but very unusual on the moon.
The researchers failed that a great comet or asteroid hit the ground and launched the rock from the ground into a space where it hit the surface of the moon about 4 billion years ago. On the moon surface, the rock was later mixed with other materials into one specimen.
"It's an extraordinary finding that helps paint a better picture of the early Earth and the bombardment that modified our planet during the dawn," Co-auctor David Kring, a research researcher at the Luna and Planetary Institute in Houston , said in a statement.