However, this only accounts for some of the water on the surface. The majority of Earth's water is below the surface and isn't accounted for by known asteroid impacts.

Only 2.5% of the Earth's global water supply is fresh water and supplies are shrinking with the unrelenting advance of climate change. Researchers say ocean water vapor may provide relief.

Earth’s water may not have originated from asteroids after all. ... but it identified the location of only about 20 percent of the hydrogen in these meteorites.

Meteorites likely contributed to Earth’s water. ... We may earn commission from links on this page, but we only recommend products we back. ©2025 Hearst Magazine Media, Inc.

A new study brings scientists one step closer to answering the question of where Earth's water came from. Water makes up 71% of Earth's surface, but no one knows how or when such massive ...

Of course, the Earth’s plate tectonics and water are not the only things to set it apart. Our home planet is the only one to host life—and the rocks here show it. Take limestone, a chalky rock ...

When Rare Earth was published, only about 100 exoplanets had been found, most of which were easy-to-detect gas giants. ... Water, as we know, is vital for life on Earth.

The transition zone between the Earth's upper and lower mantle contains considerable quantities of water, according to an international study. The research team analyzed a rare diamond formed 660 ...

Water makes up 71% of Earth’s surface, but no one knows how or when such massive quantities of water arrived on Earth. These results, which let researchers rule them out as the primary source of ...