Oxygen isotope analysis of lunar soil shows meteorites delivered only a limited amount of water to the Earth–Moon system ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers discovered that bridgmanite deep in the mantle can store far more water at high ...

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 very early Solar System formation. Matching this time, there was a tumultuous period known as the ...

Some 4.6 billion years ago, Earth was nothing like the gentle blue planet we know today. Frequent and violent celestial impacts churned its surface and interior into a seething ocean of magma—an ...

For centuries, people have wondered where Earth’s vast oceans came from. Our planet didn’t form with much water, yet today it’s covered in it. New research using powerful radio telescopes is bringing ...

For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This coincided with the Late Heavy Bombardment (ca. 4.1 to 3.8 billion years ago), a ...