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Anonymous
Anonymous asked in Science & MathematicsEarth Sciences & Geology · 2 months ago

Where did all the water come from?

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  • Anonymous
    2 months ago
    Favourite answer

    Water is abundant within the solar system. When planets were formed, they contain water. We can still find ice on Mars and on quite a few moons that orbit around some of he larger planets like Jupiter and Saturn.  Comets of course often contain a lot of water. The solar system probably formed from the remains of a giant star that exploded at the end of its life time. Stars are mostly made of hydrogen, but as they burn up hydrogen by fusing hydrogen atoms into helium, larger and larger elements are formed, and these elements include all the elements in the periodic table. Much of the earth is made of iron, another end product of star evolution.

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  • 2 months ago

    Water is a natural product in systems with a lot of both oxygen and hydrogen.  There is a chemical stability window (a redox window) where water is the stable compound rather than H2 plus (metal oxides) or O2 plus (H-bearing compounds like HF and HCl for the most part).  The element balance in an earth-type system produces conditions within the water-stable window until you get to fairly high temperatures inside the earth (then things move into the H2 stable region).

    Basically, as long as there is not a lot of something giving up electrons way easier than hydrogen, and there isn't much of anything grabbing electrons way more powerfully than oxygen, there will be H2O.  It will form from whatever H and O is available in the system.

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  • Retief
    Lv 7
    2 months ago

    Water is one of the most common compounds in the universe.

    Hydrogen combines with oxygen (both very common).

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  • 2 months ago

    Hydrogen is the lightest and most common element in the Universe.

    Oxygen on the 2nd row of the classification is quite common too.

    H2O is the most chemically stable grouping of H and O.

    So, water is common throughout the Universe.

    Water on Earth came from various sources:

    Earth itself during its formation, comets, asteroids, Theia (Earth early impactor planet).

    the contribution of each cause is still debated.

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  • 2 months ago

    Hydrogen is an immediate product of the Big Bang, Oxygen is produced during fusion in stars, so both were available in abundance during the formation of the Solar System.

    From then on, it's simple chemistry and geology.

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  • 2 months ago

    Hydrogen and oxygen formed a compound called H2O, otherwise known as water.

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