Scientists have captured a glimpse of X-radiation from the early phases of a supernova-one of the most violent events in nature! Observations from the Chandra X-ray Observatory-a major space telescope launched last July by NASA-include surprising details about supernovae, black holes, active galaxies, and clusters of galaxies.  The Chandra X-ray Observatory provides images 10 times sharper than those previously available - it can dissect the energy content of celestial X-rays with a precision 1000 times that of earlier missions. From the Series:Distinguished Leaders in Science