Friday, January 10, 2014

When You Reach For The Stars


          Because of the strong resemblance to the shape of a hand, the picture shown above has been coined the "Hand of God." The image was obtained from X-ray imaging using NASA's Chandra X-ray Observatory to detect the low-energy x-rays (red and green) and NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) to detect the high-energy x-rays (blue). The energy ranges the Chandra Observatory and NuSTAR can observe are 0.5-2 keV and 7 to 25 keV, respectively.

          The X-ray image is the result of a supernova star explosion that left behind a pulsar, which is a magnetized neutron star that rotates. The resulting magnetic field of the pulsar, coupled with its rotating motion, then interacts with charged particles created in the supernova to form a pulsar wind nebula. This nebula is what is detected to give the "Hand of God." However, it is still unclear whether the physical material is in the shape of a hand or if it is by coincidence that the emitted radiation results in the shape. Whichever it may be, there is no taking away from this breathtaking picture.