Supernovas, which are bright enough to briefly outshine all the stars in their galaxies, happen in two known ways — type Ia supernovas occur after a white dwarf dies from gorging on too much fuel from a companion star, while type II supernovas take place after the core of a star runs out of fuel, collapses into an extraordinarily dense nugget in a fraction of a second, and then bounces and blasts outward…
Four hundred years ago a star exploded as a type 1a supernova in the Large Magellanic Cloud (LMC) some 170,000 light-years from Earth. This is what was left behind. The beautiful ring-like structure of supernova remnant (SNR) 0509-67.5 is highlighted by Hubble and NASA’s Chandra X-ray space observatory observations. The X-ray data (blue/green hues) are caused by the shockwave of the supernova heating ambient gases
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