Earlier research held that meteorite impacts from the solar system's early days were a major source of Earth's water.

Ancient Moon dust, meteorite traces and Apollo samples are helping NASA scientists rethink where Earth’s water truly came ...

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.

New research suggests Earth’s water came from sources other than meteorites, challenging long-standing theories on planetary ...

Planetary scientists analyzing oxygen isotopes in lunar soil from the Apollo mission sites conclude that meteorite bombardment over 4 billion years could only have delivered a tiny fraction of Earth’s ...

Research using Apollo samples indicates late meteorite impacts were unlikely to be the main source of Earth’s water.

A new NASA study using Apollo lunar soil samples challenges a long-held theory. It suggests meteorites were not the primary ...