Earth's Water: Homegrown, Not Alien?

A new study published in Icarus challenges the long-held belief that Earth's water originated from space. Researchers analyzed an enstatite chondrite meteorite, whose composition resembles early Earth. Using a synchrotron, they discovered hydrogen within the meteorite, proving it wasn't terrestrial contamination. This suggests the building blocks of Earth were far richer in hydrogen than previously thought, providing enough to account for Earth's water. The study strongly supports the theory that Earth's water is native, a natural consequence of the planet's formation, rather than a result of asteroid impacts.