WHAT ARE SUPERNOVA?

        Supernova image (from: wikipedia)

Hello readers, thank you for spending your time here. Do you ever heard about Supernova? some of us might heard about it, and maybe saw some images of it, but what are Supernova actually? 

Supernova are exploding stars. They represent the very final stages of evolution for some stars. Supernova, as celestial events, are huge releases of tremendous energy, as the star ceases to exist, with about 10-20 times as much energy produced in the supernova explosion as our Sun releases every second. Our Sun, fortunately will not end it's life as a supernova.

NASA : Chandra's new image of Supernova remnant know as G350. 1-0.3.

Currently, supernova are only seen in galaxies other than Milky Way. We know that supernova have occurred in our Galaxy in the past, since both Tycho Brahe and his protege, Johannes Kepler, discovered bright supernova occurring in the Milky Way in 1572 and 1604, respectively. And, the Chinese, and others, have records of a "guest star" occurring in 1054 in the present constellation Taurus. Today, we see remnants of all three supernova, which appear as expanding clouds of gas, where each was originally discovered. However, No supernova has been seen in our Galaxy since Kepler's.

Here's a video showing the explanation of Supernova in more simplest way to understand, enjoy ;)

Source: youtube