Chapter
The Difference Between Type 1A and Type 2 Supernovae
24:52 - 30:13 (05:20)
The type 2 supernova is different from type 1a because it starts off much more massive and squeezes together iron atoms in the core tightly enough that they become neutrons, shrinking the star's diameter from 5,000 miles to just 12 miles. Additionally, there is a net energy loss when the star starts producing iron, as it takes more energy to combine molecules into iron than the energy released from the process.
Clips
A star dies when it reaches the point where there's a net energy loss because it takes more energy to combine molecules into iron than the energy that's released from that process, which leads the star to go boom.
24:52 - 26:13 (01:20)
Summary
A star dies when it reaches the point where there's a net energy loss because it takes more energy to combine molecules into iron than the energy that's released from that process, which leads the star to go boom. Type 1a stars blow up like a nuclear bomb while stars that never reach 1.4 solar masses go from a white dwarf to a black dwarf, which is like a campfire that gets dimmer and goes out on its own.
ChapterThe Difference Between Type 1A and Type 2 Supernovae
EpisodeSupernovae: Best Around, Case Closed
PodcastStuff You Should Know
The type 2 supernova is created by a much larger and more massive star than the type 1 supernova.
26:13 - 30:13 (03:59)
Summary
The type 2 supernova is created by a much larger and more massive star than the type 1 supernova. The immense gravitational pressure causes the iron atoms in the core of the star to be squeezed together so tightly that they become neutrons, and the star collapses into itself.