Summary:
- The article discusses a new study that suggests water arrived on Earth in the final stages of the planet's formation, rather than earlier as previously thought.
- The study analyzed the chemical composition of meteorites and found that the water on Earth likely came from the same source as the water in carbonaceous chondrite meteorites, which formed in the outer solar system.
- This challenges the previous theory that water was present on Earth from the very beginning and instead suggests that it was delivered to the planet later, potentially through collisions with icy objects from the outer solar system.