Brownhouse71 t1_j8dxvob wrote on February 13, 2023 at 4:30 PM

Reply to comment by atomfullerene in From where the water in ancient Mars came? by ClienteFrecuente

Wouldn't volcanoes be emitting water already on Mars? Isn't the question how it would have gotten on/in Mars in the first place to even be emitted by the volcanoes?

atomfullerene t1_j8e2eli wrote on February 13, 2023 at 5:01 PM

Hydrogen and oxygen are common elements that were widespread during the formation of the solar system. Mix them together and you get water. Most of the hydrogen was lost off the rocky planets early in the solar system's history, but some of it got bound up in rocks ( along with a lot of oxygen) where it could be later released as water