Exploding Star

This image comes from a very deep Chandra observation of the Tycho supernova 
remnant. Low-energy X-rays (red) in the image show expanding debris from the 
supernova explosion and high energy X-rays (blue) show the blast wave, a shell 
of extremely energetic electrons. These high-energy X-rays show a pattern of X-ray 
"stripes" never previously seen in a supernova remnant.

Description from Space.Com: 

NASA's Chandra X-ray Observatory spacecraft detected a suprisingly regular pattern of X-rays in a well-known supernova remnant called Tycho. The new observations provide the first direct evidence that a cosmic event can rocket particles to energies 100 times higher than those achieved by Earth's most powerful accelerators, researchers said. The discovery of X-ray "stripes" in the remains of an exploded star may help astronomers learn how some of the highest-energy particles in our galaxy reach their incredible speeds, a new study suggests. The find may also help scientists figure out how some of those super-speedy particles — which are known as cosmic rays, and constantly bombard Earth— are produced, they added. "We’ve seen lots of intriguing structures in supernova remnants, but we’ve never seen stripes before," said study leader Kristoffer Eriksen of Rutgers University in a statement. "This made us think very hard about what’s happening in the blast wave of this powerful explosion."