Tycho’s Supernova Remnant: Exploding Stars and Stripes
A long chandra observations of Tycho has revealed a pattern of X-ray “stripes” never seen before in a supernova remnant. The stripes are seen in the high-energy X-rays (blue) that also show the blast wave, a sheil of extremely energetic electrons. Low-energy X-rays (red) show expanding debris from the supernova explosion. The stripes, seen to the lower right of this composite image that includes optical data from the Digitized Sky Survey, may provide the first direct evidence that a cosmic event can accelerate particles to energies a hundred times higher than achieve by the most powerful particles accelerator on Earth.
Image Credit: X-ray: NASA/CXC/Rutgers/K.Eriksen et al; Optical: DSS
Hundreds of pictures of Earth, each taken at about 6AM , showing the terminator - the day/night line - over the course of one year (2010sep-2011sep). Taken by METEOSAT-9 Earth-observing satellite. Watch the Video here Credit: NASA Earth Observatory