4 ms·

I was able to reach 10^-7 mbar with a good vacuum system and I though I would have few thousand molecules, turns out there is a billion (10^9) molecules per cub

• jcims 4y ago
  And yet somehow, as far as we know, the energy of every molecular collision is faithfully preserved during a supernova, when effectively the entire volume of a star collapses into its core in less then a second. Reality is very strange.
  • gattr 4y ago
    That's not accurate. Only the inner core collapses (hence the "core-collapse supernova"; there are also other types), the rest rebounds, is heated up by core-produced neutrinos, and gets ejected. The Wikipedia article is a good start, also there are plenty of good papers on arxiv (e.g. on still-not-too-successful numerical modeling of the aforementioned "heating", without which the thing simply doesn't go bang).
    • jcims 4y ago
      Good correction, thank you!