dubmarine
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the universe is full of water but where is it made and how ?
Water can be formed when hydrogen in combusted in air / oxygen.dubmarine said:thanks Lurch, i have heard that our water comes from comets but was not sure , of course this leads to the obvious question where do comets get there water from ? hydrogen is plentifull but what about oxygen and where and how are they put together to form water ?
The same question would apply to every other element on earth. I think it makes more sense if you look at it from the other direction: Where did all the hydrogen go? It was blown away by the sun, leaving proportions that we now have.LURCH said:I think the real poser here is where the Oxygen came from. Hydrogen was abundant, on that we are all agreed. It is also well-known that hydrogen will combine with O2 without much provocation. But where did we get the O2? Stellar fusion? And if so, would it have been from the sun, or would it need to be previously made in other stars, to make it available early enough and in sufficient quantities to explain current conditions (that last bit seems very probable)?
LURCH said:The main theory seems to be that the water was present, as water, in the cloud of material from which the system formed. This is taken as one of the evidences that ours is not a first generation star, but is mostly made of debris from previous stars. We've still got mostly Hydrogen, but there are more of the heavier ellements than would be expected from space.