Ever wonder what happens in the aftermath of a supernova? In this video, you’re watching the glowing remnants of a stellar explosion 17,000 light-years from Earth disperse over a period of 25 years, making this Chandra X-ray Observatory’s longest-spanning video ever released. https://go.nasa.gov/3NaO7bO | NASA - National Aeronautics and Space Administration

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