As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

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

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 ...

For many years, planetary scientists have believed that water-rich meteorites arriving late in Earth's history (OK, the time ...