A star's explosive death in a supernova left behind this dreamy cosmic scene. Known as N103B, this supernova occurred in a neighboring galaxy to our Milky Way, known as the Large Magellanic Cloud. Because of its relative proximity – in cosmic terms, at least – astronomers can observe this supernova remnant in remarkable detail. The scarlet filaments near the top of the image are the "shock fronts" of the supernova. They show that this explosion isn't expanding as a sphere anymore, but rather as

Awesome Detecting Superfast Matter ! How supernova remnants accelerate cosmic rays to near the speed of light ? Scientists always suspected supernova remnants could speed up cosmic rays, the streams of charged particles that exist throughout space. Now they have proof. NASA’s Fermi Gamma-ray Space Telescope caught two supernova remnants—IC 443 and W44—red-handed as they accelerated cosmic rays to near the speed of light. As cosmic rays travel through the Milky Way galaxy, magnetic fields scrambl