About 7,000 light years away from Earth lies the aftermath of a massive star that went supernova. In its wake we see gorgeous wispy interstellar gases spreading out in a non-uniform manner. The way this happened is a massive star (at least 8 times larger than our Sun) went through stellar death process (where it exhausts all its hydrogen and works its way through heavier elements like helium>carbon>oxygen etc.) and eventually the star’s core collapsed when it lost stability. This resulted in one of the most spectacular explosions in the universe – a supernova. (Want more details on how supernovae happen? Read my article here). As the supernova remnant expands into its surroundings it shocks filaments of oxygen atoms (glowing green-blue). What’s even more fascinating is that the span of this supernova is 60 light years across (About 600 trillion km...