Did Theia Come From Closer to the Sun Than Earth?

Ajouté : 2026-05-22

Scientists have discovered that Theia, the impactor that formed the Moon, likely originated from closer to the Sun than Earth, based on isotope evidence from lunar rocks, Earth samples, and meteorites showing that Earth and the Moon are chemically almost identical, which supports the giant-impact theory and suggests Theia's material came from the inner solar system, possibly including a previously unknown type of ancient planetary building block.