In this case, you've got at least some meteorite parent bodies that have liquid water on them, long before there would have been water on Earth. It gives you an alternative environment in which life could have evolved on Earth. The technique involved studying the proportion of xenon and iodine isotopes extracted from a tiny piece the rock. By studying the proportion of the isotopes, the researchers were able to pinpoint the age of the salt crystals and water. Same parent asteroid Zag and Monahans are of the most common type of meteorite that hits Earth, called chondrites.
Scientists believe both came from the same parent asteroid.
The existence of water on the meteorites suggests that water, or evidence of water, may be present on many more meteorites that fall on Earth. If this is the case, water may not be as rare in the solar system as many scientists suggest. And the presence of water on meteorites and asteroids in the solar system would have helped to create the right kind of environment for life to develop outside of Earth.