"Did Earth's Water Originate from Ancient Space Rocks? Meteorite Discovery Points to Possibility"
Researchers analyzing ancient meteorite samples have found evidence suggesting that the planetesimals that formed Earth and other inner solar system planets already contained water more than 4 billion years ago. By measuring the levels of iron in the meteorites, they discovered a significant amount of missing iron, indicating the presence of oxygen and, by extension, water. This finding implies that the primordial material that formed the inner solar system likely included water, which could also indicate the presence of other elements crucial for creating life.