... Star Streams and the Sunflower Galaxy . ... Also cataloged as NGC 5055, the majestic island universe is nearly 100,000 light-years across, about the size of our own Milky Way. ... At the northwestern edge of the constellation Vela (the Sails) the four frame mosaic is over 10 degrees wide, centered on the glowing filaments of the Vela Supernova Remnant, the expanding debris cloud from the death explosion of a massive star. Cepheus: Trunk to Bubble . ... A Laser Strike at the Galactic Center . ...