... Centaurus A: X-Rays from an Active Galaxy . ... N49 s Cosmic Blast . ... Scattered debris from a cosmic supernova explosion lights up the sky in this gorgeous composited image based on data from the Hubble Space Telescope. ... Above, false-color x-ray images from the Chandra Observatory reveal details of this remnant pulsar's x-ray bright nebula along with emission from a spectacular jet of high-energy particles. Aurora Over Cape Cod . ...