For many years, planetary scientists have believed that water-rich meteorites arriving late in Earth’s history (OK, the time might be late to the researchers, but it’s still 4 billion years ago) could have delivered most of Earth’s water. But in a paper (https://www.pnas.org/doi/10.1073/pnas.2531796123) published in the Proceedings to the National Academy of Sciences, researchers led by … Continue reading Did Earth’s water really come from meteorites?