This Is What's Left Behind When a Supernova Explodes — mashable.com

A violent star explosion long ago has left behind an eye-catching supernova remnant, an ethereal grave marker in space that has been seen like never before by scientists using three space telescopes. When supersized stars reach the end of their lives, they explode in a brilliant burst of light that can outshine entire galaxies and give off more energy than a smaller star can produce in its entire lifetime. The giant destructive supernova explosions leave behind beautiful wisps of dust and gas called supernova remnants. NASA captured an image of one of these star ghosts by combining infrared light from NASA's Spitzer Space Telescope, as well as X-ray light from space agency's Chandra X-Ray Observatory and the European XMM-Newton telescope.

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