Nasa reveals what an exploding star looks like for the first time | The Independent

A star exploded – and for the first time, we got a good look inside. When a massive star 2.2 billion light-years away reached the end of its life and exploded in a brilliant burst of light, astronomers analyzing the debris didn’t see the usual outer layers of hydrogen, helium, or oxygen. They saw silicon. Sulfur. Argon. Elements that normally lie buried deep inside a star’s core. This wasn’t supposed to be possible. According to stellar models, massive stars are built like onions. Hydrogen and h

Supernova supernova is a powerful and luminous stellar explosion. This transient astronomical event occurs during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion. The original object, called theprogenitor, either collapses to a neutron staror black hole, or is completely destroyed. The peak optical luminosity of a supernova can be comparable to that of an entire galaxy before fading over several weeks or months. | Free AstroScience