Earth’s Water was Present before Moon-Forming Impact, Research Shows
By Staff Writer
Posted in Insane
The high-energy impact about 100 million years after our Solar System formed, resulted in the two colliding planetary objects completely merging to create the Earth-Moon system we have now. An international research team led by an Open University scientist has discovered that most of Earth’s water was present before the catastrophic impact and not delivered later by small asteroids and comets as previously thought. This suggests liquid water can survive giant impacts and could be abundant on exoplanets, making it more likely that life exists beyond the Solar System. The team detected only a small difference between the lunar and terrestrial rocks. Oxygen isotopic evidence for accretion of Earth’s water before a high-energy Moon-forming giant impact.