Supernova


     Supernova is the biggest explosion of a star in a galaxy that marks the end of the star's history. Each blast of supernova is the extremely bright, super-powerful explosion of a star. Stars that experience supernova will look very bright. The brightness can reach hundreds of millions of times the star's original light. A few weeks before a star experiences a supernova, the star will release energy that equivalent with the sun's energy released during it's lifetime. This explosion of supernova collapses most star material with a speed of 30.000 km/s (10% the speed of light) and releases shock waves that can destroy the interstellar medium.
     Supernova can caused by the "last hurrah" of a dying massive star or when two stars orbit one another and of those star is an Earth-sized white dwarf. Because of that causes factor, supernova divided into two types.
1. Supernova Type 1
    This type of supernova can happen if a star at least five times the mass of our sun explode with a fantastic bang! The star can explode when a massive star runs out of fuel, so the pressure go drop and gravity wins out.

an illustration of how gravity holds a star together

2. Supernova Type 2
    This type of supernova can happen if one white dwarf collides with another or pulls too much matter from its nearby star. If that happen the white dwarf can explode with a biggest power.

     Supernova is one of beautiful astronomy phenomenon that happen in outer space but we can't saw that directly in our milky way.



source :
https://spaceplace.nasa.gov/supernova/en/

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