Explanation Text

Supernova: The Death and Rebirth of A Star


     Supernova, simply put, is the collapse of a massive star that happens in an explosion when the core of a star is no longer able to sustain itself through nuclear reaction and it collapses under the massive weight of its own body. The term “Supernova" came from the latin word of “nova" meaning ‘new’ with an added prefix “super-”. Supernovas usually last for a few months and happen every 50 years in a galaxy as big as the milky way. Supernovas are also split into mostly two categories: Type I and Type II. Type I supernovae happen when A star accumulates matter from a nearby neighbor until a runaway nuclear reaction ignites. Meanwhile Type II supernovae happen when a star runs out of nuclear fuel and collapses under its own gravity.

    Stars are gassy giants in the universe that emit energy. This energy comes in the form of light and heat. Stars create these energies by nuclear reactions that happen in their core. Stars are further divided into smaller categories, such as main sequence stars, brown dwarfs, red giants, etc. Stars come from stellar nebula, after their creation, they are (m inly) split into two groups: Average stars and Massive stars. All stars go through a phase in their lives known as giant phases (Red Giants for Average Stars and Red Supergiants for Massive Stars). This phase happens when the core of a star works harder to push against the gravity of its massive body, causing it to grow several times larger than its original size. These massive stars are the ones that could go through supernovas.    

    After the core of a Red Supergiant exhausts itself as there is no more material left for the nuclear reactions to take place, the star collapses on itself from the immense pressure of its own body. As there is no oxygen to burn in space, there is no fire. The explosion, the supernova; is simply the star spewing out its own mass in a beautiful light show that spans for a few months. After the death of said star, the leftover core may become a neutron star or a black hole. If the force of the explosion wins, the core becomes a neutron star, and if the gravity of the explosion wins, the star collapses into a blackhole.Therefore the definition arises that a Supernova is both the beautiful death and rebirth of a star. Must the core collapse, it will be a death (black hole), and may it explode, it will be a rebirth (neutron star).


        Mettadevi Gyani Paramita

        XI Hatta

        SWR - Writing

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