... Credit: Robert Gendler Explanation: It's easy to get lost following the intricate filaments in this detailed image of faint supernova remnant Simeis 147. Seen towards the constellation Taurus it covers nearly 3 degrees (6 full moons) on the sky corresponding to a width of 150 light-years at the stellar debris cloud's estimated distance of 3,000 light-years. ... Publications with keywords: supernova remnant - H-alpha - pulsar . Publications with words: supernova remnant - H-alpha - pulsar . ...