Since iron is a stars waste could a star that goes Super nova eject pure iron to travel across the galaxy?


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    $\begingroup$ It already has :-) $\endgroup$ – Carl Witthoft Mar 27 '19 at 18:41
  • $\begingroup$ You link to a closed post (that went through numerous revisions before being edited down to a non-question) posted by someone who thinks they have a nearly pure iron meteorite. What is the purpose of the link? Are you asking whether an iron chunk of that mass (a reported 4,902 grams) and that reported purity (99.99%) could be directly ejected by a supernova? $\endgroup$ – Jacob C. Oct 31 '19 at 21:01

Sure. Iron is not made in significant quantities in the Big Bang, so 100% of the iron on Earth today was synthesized in a star. There's no other source.

It escapes in many ways:

  • Supernovae
  • Mergers between compact stars like white dwarfs and neutron stars
  • Stellar winds from more ordinary stars

Supernovae are the main source of modern-day iron, with r-process nucleosynthesis during the explosion producing a lot of iron and elements near iron.

  • $\begingroup$ What do you think about the linked question? $\endgroup$ – Muze Mar 27 '19 at 18:29
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    $\begingroup$ I don't know enough about meteoritics to speak intelligently -- sorry! (Mineralogy was never a favorite subject.) $\endgroup$ – Mark Olson Mar 27 '19 at 18:36
  • $\begingroup$ Mass spectrometry may tell the tale: adsabs.harvard.edu/abs/2001AGUFM.V21A0959K $\endgroup$ – Wayfaring Stranger Mar 28 '19 at 15:20
  • $\begingroup$ The question isn't asking whether iron is produced in supernovae. You seem to be agreeing with the premise of the question. $\endgroup$ – ProfRob Mar 30 '19 at 7:47

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