Sulfur was key to the first water on Earth
The find suggests all rocky planets get wet soon after birth, boosting the chances for life
![Earth ocean](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2024/07/070924_kc_water_on_earth_feat.jpg?fit=1030%2C580&ssl=1)
Although Earth formed in a hot, dry region around the newborn sun, hydrogen survived inside the sulfur-bearing mineral pyrrhotite and later joined oxygen to create water on our world.
S.Cristoforetti/ESA, NASA (CC BY-NC-SA 2.0)