Timeline for Could liquid water have existed in open space 15 million years after the Big Bang?
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21 events
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| Apr 16, 2021 at 14:10 | answer | added | Questioner | timeline score: 1 | |
| Apr 16, 2021 at 5:12 | comment | added | G_B | @MartinB Thinking about the mass of a 2LY sphere of water, I suspect the answer is "not long enough for them to suffer". Nothing that heavy stays livable, or liquid, or water, for very long. | |
| Apr 15, 2021 at 16:15 | comment | added | MartinB | I took your question to mean, if a blob of water happened to exist in space, how long would it persist? I would be interested to hear opinions on how long the core of a, say, 2 light year diameter sphere of water would remain livable (to fishy aliens). | |
| Apr 15, 2021 at 9:46 | vote | accept | Cerelic | ||
| Apr 15, 2021 at 5:19 | review | Suggested edits | |||
| Apr 15, 2021 at 16:34 | |||||
| Apr 14, 2021 at 16:22 | comment | added | peterh | Very unlikely but maybe possible that some higher pressure pockets had existed, either by gravitational fluctuations or by some different, possibly unknown phenomena. Too much surely not (it is known that the Universe was "flat" at the time). There, if also the temperature was correct, maybe some little liquid water could have imho existed. But there were not stars yet, afaik the Universe at the time is expected to be a roughly same presure & temperature, filled out mostly with H, with a little He. | |
| Apr 14, 2021 at 16:06 | comment | added | peterh | The pressure war far below the triple point of the water, so the very little water which existed, was either vapor or ice (second is unlikely because there was not enough to form crystals, due to the very little O2). | |
| Apr 14, 2021 at 7:30 | comment | added | gerrit | Note that temperature in this context does not really mean the same as the temperature you measure in your oven or garden. | |
| Apr 13, 2021 at 23:36 | answer | added | Mark Foskey | timeline score: 48 | |
| S Apr 13, 2021 at 21:25 | history | became hot network question | |||
| S Apr 13, 2021 at 21:25 | history | became hot network question | |||
| Apr 13, 2021 at 21:02 | history | tweeted | twitter.com/StackAstronomy/status/1382076784049537025 | ||
| Apr 13, 2021 at 16:20 | comment | added | PM 2Ring | However, even if some water was formed in that era, it wouldn't be in liquid form: liquids tend to evaporate at low pressure. See en.wikipedia.org/wiki/Phase_diagram | |
| Apr 13, 2021 at 16:16 | comment | added | PM 2Ring | The Wikipedia BBN article has a link to Standard big bang nucleosynthesis and primordial CNO Abundances after Planck, which uses simulations to calculate a BBN CNO/H ratio (by number) of $\approx (5-30) × 10^{-15}$, and possibly as high as $10^{-13}$. So there was (probably) some oxygen before stars existed but it was spread very thinly through the predominant H & He. | |
| Apr 13, 2021 at 15:03 | answer | added | Warrick | timeline score: 21 | |
| Apr 13, 2021 at 14:33 | comment | added | WarpPrime | There probably was no oxygen in the early Universe, until stars formed. | |
| Apr 13, 2021 at 13:56 | comment | added | Jon Custer | Finding enough oxygen to make water might be problematic... | |
| Apr 13, 2021 at 13:49 | history | edited | B--rian | CC BY-SA 4.0 |
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| Apr 13, 2021 at 13:41 | review | Low quality posts | |||
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| Apr 13, 2021 at 13:31 | review | First posts | |||
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| Apr 13, 2021 at 13:25 | history | asked | Cerelic | CC BY-SA 4.0 |