Recent content by Qshadow

I do not think they refer only to hydrocarbons, here are some links: https://www.sciencedirect.com/science/article/abs/pii/0079194677900064 https://ui.adsabs.harvard.edu/abs/2017AGUFM.V22A..01M/abstract https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/96GL03931 all these papers talk...

Carbon is considered volatile by planetary science, eg Moon lacks volatiles and thus lacks carbon. However volatiles are defined as "elements or substances with low boiling point", but Carbon boiling point is very high! Its sublimation point is 3900K, so it should be refractory and not volatile...

Well, this is exactly the confusion, 182K or even if it is 150K (which is at 3AU), but were does 5AU come from? not clear... P.S. Of course you must remember that sublimation happens ALWAYS even at the coldest temperature (except absolute zero), but at very slow rate, so the rate of...

In space (vacuum) because of low pressure it is always sublimation only. there is never liquid state.

What do u mean?? it is the opposite: The colder it is the less sublimation happens. so 182K looks like too HOT.

Thanks a lot for this info, I somehow missed Lodders paper before. Although it contradicts a bit some other references that i found (see wiki article), eg see reference (Podolak and Zucker, 2010) 143 K at 3.2 AU to 150 K at 3 AU Actually it is the opposite, 3AU was the distance of snow line...

Thanks for the explanations and the link. I have updated the wiki article, Frost line (astrophysics), and gave the link to Hayashi paper, but although everybody refers to it in regard to snow line, actually this paper talks about magnetic fields and not about the snow line, for his calculations...

Thanks, JCMacaw! This is a very interesting paper, and a new resource website for me ;) I have just finished reading it, and unfortunately in spite of all the calculations there the magic number "150 K" jumps out of the blue (without any calculation) just by saying: "At temperatures above ~150 K...

Well... the latest details in this wiki article were written by me (at least this part and this reference were added by me), you can see it in the history. So believe me, I have read the referenced article, the problem is that this article just says: "The snow line occurs at a temperature...

I am trying to find references for the the Wikipedia article Frost line (astrophysics) I am having a hard time finding a reference for the "Sublimation temperature of water in vacuum" that is used for calculation of the current snow line. E.g.: I have found 150K in several places, without any...

Thanks Bandersnatch, your representation is much nicer indeed. the paper is very interesting, it will take me some time to swallow it. This is something that I was afraid of, but without some simulation or numerical calculation I can't know for sure. Also, for the 1:2:4 orbital resonance...

Thanks for clarification. And after seeing that nice simulation i wonder if we can generalize this law further, e.g. probably it work for orbit ratios that are powers of two: 32:16:8:4:2:1 But what about packing as much satellites as possible using the rule that we saw now, eg...

I am interested in theoretical (what if) possibility of our Earth having more than one moon, I wonder if they can be arranged at the same orbital resonance as the Galilean moons 1:2:4 If yes, would such system be stable? If yes, should our Moon be the first, second or third satellite out of the...

I am also interested in this question, but I got confused with the ratio of number of orbits completed in the same time interval, and the ratio of orbital periods (which would be the inverse ratio). with Galilean moons it is easy, they can be written symmetrically 1:2:4 (ratio of orbital...

I know about chemical and physical differences between Solution and Colloid, but I can't find anywhere what is the right naming convention for Colloid substances. Let me explain: For Solution we have: Solute dissolved in Solvent called a Solution. For Colloid we have: "1st...