The 'Kepler' space telescope has for the first time captured visible light from the shock wave caused by an exploding star. The blast lasted just 20 minutes and a team of scientists has rescued it from the observations stored by the telescope during three years of monitoring 500 distant galaxies.
The star is called KSN 2011d and is 1.2 billion light years from Earth, NASA reported in a statement. The star is a red supergiant, 500 times larger than our Sun and 20,000 times brighter. This phenomenon, known as a supernova, happens when a star runs out of its main fuel, hydrogen. The nucleus of the star implodes and produces an expansive wave that ends up bursting the surface.