“When a massive star explodes at the end of its life, the explosion dispenses different elements-helium, carbon, oxygen, iron, nickel-across the universe, scattering stardust. That stardust now makes up the planets, including ours.” -Michelle Cuevas
Every once in a while, a new light appears somewhere in the night sky: the result of a massive star reaching the end of its life. From many millions of light years away, the brilliance of a supernova shines across the cosmos. Just a few days ago, a new light was discovered in a galaxy only 22 million light years away, making it the closest supernova discovered in three years.
The galaxy housing it is a hotbed of supernova formation, having been home to ten such explosions in the past 100 years: more than we’ve found in any other galaxy. The reason? This entire galaxy, despite having only half the stars of the Milky Way, is a giant star-forming region. Starburst galaxies like this are the best place to look for cataclysmic events like this, and NGC 6946 is maybe the best example of all.