New research suggests “microlightning” exchanges among water droplets in Earth’s early atmosphere may have sparked the ...

Scientists discover hydrogen in a rare meteorite, suggesting Earth had the ingredients to make water from the start.

Earth’s landmasses are holding onto a lot less water than they used to — and this loss is not just due to melting ice sheets. Terrestrial water storage, which includes water in underground ...

"Venus has 100,000 times less water than the Earth, even though it's basically ... Set to launch in 2029, DAVINCI will drop a probe through the scorching hot atmosphere of Venus to determine ...

The story of how each drop ended up here has been hard to fathom ... This hints that at least some of Earth’s water arrived from space. Late in 2010, these glimpses of comet Hartley 2 arrived ...

(CNN) — Researchers say they have uncovered evidence that early Earth was home to more hydrogen than previously thought, calling into question widely held beliefs about the origins of water and ...