NEBULAE & STAR CLUSTERS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z           HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site Bubble Nebula (NGC 7635) The Bubble Nebula. Image courtesy Richard Crisp The smallest of three bubbles surrounding the massive star BD +60° 2522 in the constellation Cassiopeia (R.A. 23h 20.7m Dec. +61° 12'), and part of the gigantic bubble network S162, created with the help of other massive stars. As fast-moving gas spreads out from BD +60° 2522, it pushes surrounding sparse gas into a shell. The energetic starlight then ionizes the shell, causing it to glow. The nebula is about 6 light-years across and visible even with a small telescope. Related category    • NEBULAE AND STAR CLUSTERS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP