3 ms·

A hot, expanding, fully ionized plasma. Over weeks to years it cools, recombines into ions/neutral atoms, forms molecules in some regions, and a fraction conde

A hot, expanding, fully ionized plasma. Over weeks to years it cools, recombines into ions/neutral atoms, forms molecules in some regions, and a fraction condenses into dust grains, often as iron-bearing compounds like FeS and as inclusions in silicates.

JumpCrisscross 10mo ago
> Over weeks to years it cools Neat. Good source for reading up more on this? > a fraction condenses into dust grains Does it deposit straight into grains from gas? Or is there a period when a bunch of liquid iron is sitting around radiating its tail off?
- chasil 10mo ago
  I don't think liquid can exist in space. If I remember from undergrad thermodynamics, the vapor dome describes states where liquid can exist, and (gas) pressure must be present. https://www.sciencefocus.com/space/strange-reason-space-wont-let-liquids-exist https://www.sciencefocus.com/space/strange-reason-space-wont...
  - JumpCrisscross 10mo ago
    > don't think liquid can exist in space Ordinarily, no. Whether supernova remnants count as “space” might be an alternate phrasing of my question.
    - mr_toad 10mo ago
      Even before it exploded it would have been less dense than water. It just goes from a hot cloud of gas to a cold one.
      - chasil 10mo ago
        As I understand it, a white dwarf is "electron degenerate matter," which is more dense. https://en.wikipedia.org/wiki/Degenerate_matter https://en.wikipedia.org/wiki/Degenerate_matter
- A_D_E_P_T 10mo ago
  Here you go bro: https://orca.cardiff.ac.uk/id/eprint/110293/1/10.1007%252Fs11214-018-0492-7.pdf https://orca.cardiff.ac.uk/id/eprint/110293/1/10.1007%252Fs1...
  - JumpCrisscross 10mo ago
    :D Thank you!
- pixl97 10mo ago
  > liquid iron is sitting around radiating its tail off With the energy imparted by the cataclysmic devastation of a supernova I'd assume it's a plasma that cools and sublimates into a gas. These clouds of gas typically have magnetic fields that can bring particles close together where they form dust/grains.

JumpCrisscross 10mo ago

> Over weeks to years it cools Neat. Good source for reading up more on this? > a fraction condenses into dust grains Does it deposit straight into grains from gas? Or is there a period when a bunch of liquid iron is sitting around radiating its tail off?

chasil 10mo ago
I don't think liquid can exist in space. If I remember from undergrad thermodynamics, the vapor dome describes states where liquid can exist, and (gas) pressure must be present. https://www.sciencefocus.com/space/strange-reason-space-wont-let-liquids-exist https://www.sciencefocus.com/space/strange-reason-space-wont...
- JumpCrisscross 10mo ago
  > don't think liquid can exist in space Ordinarily, no. Whether supernova remnants count as “space” might be an alternate phrasing of my question.
  - mr_toad 10mo ago
    Even before it exploded it would have been less dense than water. It just goes from a hot cloud of gas to a cold one.
    - chasil 10mo ago
      As I understand it, a white dwarf is "electron degenerate matter," which is more dense. https://en.wikipedia.org/wiki/Degenerate_matter https://en.wikipedia.org/wiki/Degenerate_matter
A_D_E_P_T 10mo ago
Here you go bro: https://orca.cardiff.ac.uk/id/eprint/110293/1/10.1007%252Fs11214-018-0492-7.pdf https://orca.cardiff.ac.uk/id/eprint/110293/1/10.1007%252Fs1...
- JumpCrisscross 10mo ago
  :D Thank you!
pixl97 10mo ago
> liquid iron is sitting around radiating its tail off With the energy imparted by the cataclysmic devastation of a supernova I'd assume it's a plasma that cools and sublimates into a gas. These clouds of gas typically have magnetic fields that can bring particles close together where they form dust/grains.