PT. 1

As Junior's lifecycle is about to be finished, our star will then experience a phenomenon called a planetary nebula, where Junior's outer layer is scattered and dispersed as a result of his expansion.
Senior's lifecycle is about to be finished too, the difference is that instead of having a planetary nebula, Senior will create a luminous explosion that is called a supernova. This is the result of low pressure in a massive star where gravity will take over and seconds after that it will produce a magnificent explosion.
After transforming into a planetary nebula, Junior's core and remnants will still be strong enough that it will be called a white dwarf, about the size of a planet. This new phase will just be only the shadow of our star's former self and will produce less light, energy, and luminosity.
Now moving on, unlike Junior who still had a new opportunity to at least be in the shadow of our star's former phase, Senior will be experiencing a whole new phenomenon and will now be called a black hole. This is the result of Senior's supernova where a black hole can make deep gravity sink and prevent light from escaping.
After millions and billions of years, both the remnants of Junior and Senior will be used as material for new stars to be created into our universe.
Thank you for listening class! And don't forget your assignments!
Goodbye and thank you Prof. have a happy day!

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