05// the life of high-mass stars

what's up sigmas

I have already talked about low-mass stars, so I think it's time to talk about the massive ones!

Massive stars are typically white or blue and are very big and hot. They can get from 9 to 10 solar masses.

They go through the same process as low-mass stars, but even faster, up until they become a red giant. The core becomes smaller than before, but because of the star's mass, it gets hot enough to create other elements besides carbon and oxygen. 

After the star burns all the H, He, C, O nuclei, Ne, Si and finally Fe continue to fuse, creating more energy to keep the star balanced. 

Iron nuclei cannot fuse together anymore, and therefore can't produce enough energy against gravity.

After all the nuclei are basically burned, the iron core starts to collapse on itself, because iron nuclei are not able to create energy anymore. A supernova happens. The atoms in the core are pushed so much, that electrons are pushed into protons, creating a neutron. This makes the collapse of the core happen even faster, and the core is separated from the outer layers.

With all the mass being contained in the core, the core can resist gravity. With all the mass, the resistance that neutrons have towards each other prevents more particles from compressing, creating a neutron star.

If the core is massive enough, the neutron star can continue to collapse and create a black hole.

Supernovas leave behind a remnant, something that looks similar to a nebula.

feel free to add stuff/correct me, I'm gonna make the next entry abt neutron stars!

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