spaceplasma: Planetary Nebula HDW 3 Hartl-Dengel-Weinberger 3 (HDW 3) is a large, ancient planetary nebula. Its distinctive braided shape is the result of the planetary nebula colliding with the interstellar gas around it as the nebula moves through
spaceplasma: Planetary Nebula HDW 3 Hartl-Dengel-Weinberger 3 (HDW 3) is a large, ancient planetary nebula. Its distinctive braided shape is the result of the planetary nebula colliding with the interstellar gas around it as the nebula moves through