A new study in the journal Science suggests that water-soaked grains of dust present early in the Solar System are the source of Earth’s water. Early Earth. Image credit: Christine Daniloff. Researchers have long been uncertain whether water was present at the formation of Earth, or if it arrived later, perhaps carried by comets or meteorites. Now, a team of scientists has found that rocks from Baffin Island in Canada contain evidence that Earth’s...
