It was long thought, up until recently, that asteroids and comets delivered Earth's oceans during the very early Solar System ...

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 ...

A new NASA study of its Apollo lunar soils clarifies the Moon’s record of meteorite impacts and timing of water delivery.

Nasa researchers studying Apollo-era lunar soil discovered that meteorites from the Moon provided only a small fraction of ...

NASA research using Apollo lunar regolith data refines the Moon’s impact record and places limits on meteorite contributions to Earth’s water over geologic time.