If water came from space, and all life on Earth came from water, doesn't that mean we came from space too?

You may have to ask the guys who actually came up with that theory.

If we are going Big Bang here, then after the planets came to being (unsure exactly how, I think the energy turned to mass over several millenia and that clumped together into celestial bodies and so on) they had the majority of the elements they will ever have. The only "input" would have been planets crashing together initially before orbits were established and then meteorites/comets after that.

But seeing as Hydrogen was probably the most abundant element around, it isn't far fetched to think water could be formed, since the only other ingredient is Oxygen.

So, I mean, everything "came from space" since that's... where we live.


But your question was asking if all water on earth came from space. Meaning before then, there was no water. Having done NO research on this (since this Question calls for opinions) I'd say the only way that would be possible is if there were just balls of ice floating around space. But if that were the case, then why not go ahead and say the Earth formed with water?

It kind of sounds like you are use to people being creationists. Because as far as I know, most people who believe in the Big Bang believe in life on other planets. It is almost statistically impossible for there to NOT be life on other planets. And if there are giant balls of ice floating out there, then the likelihood of life on other planets gets even bigger.

Sorry for wall of text that wasn't thought out well. Just my opinion on the matter.