Blood is red due to iron content. Iron can only be produced by nuclear fusion in stars. We are all stardust.
The carbon transitions to nitrogen and oxygen repeatedly.
> This result therefore paves the way towards a direct measurement of the solar metallicity using CNO neutrinos. Our findings quantify the relative contribution of CNO fusion in the Sun to be of the order of 1 per cent;
I find it amazing that we can analize the composition of the core of the Sun measuring the energy of the neutrinos.
(Photons are not useful, because they bounce a lot of times before escaping from the Sun, so they provide only information about the outher layers.)
What form does stellar iron take once the star it was formed in fails? Is it a gas? Small solids? Individual atoms?
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?
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...
Ordinarily, no. Whether supernova remnants count as “space” might be an alternate phrasing of my question.
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.
It is also somewhat ionized.
Is that meant to be good? I always chuckle when people make these kind of statements. Is the association to cosmic objects meant to make you feel better about something? I personally don't find stardust particularly interesting. The fundamental forces of nature on the other hand are much more appealing to me.