The origin of water on Earth remains unknown

The origin of water on Earth remains unknown, scientists reported on the results of the study.

Previously, it was assumed that the water on our planet has brought the meteorites at the stage of planet formation, but the comparison of ruthenium isotopes in the meteorite from lake Tagish in British Columbia and in the Earth’s mantle have shown that there is no similarity between them, and if it is the meteorites fell on the Earth in process of its formation has brought water levels of the isotopes in the mantle and in meteorite would coincide.

the results show that water appeared on Earth after the formation of her robes.