For the Moon itself, the story is different. The Moon has far less water than Earth, but for such a dry world it’s important. Most of it lies frozen in dark polar craters, and these icy spots could ...

Planetary scientists analyzing oxygen isotopes in lunar soil from the Apollo mission sites conclude that meteorite ...

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 ...

It was long thought, up until recently, that asteroids and comets delivered Earth's oceans during the early Solar System. Matching this time, there was a period known as Late Heavy Bombardment from ...