Facts About A Nebula



  • Nebula (plural nebulae) was the word once used for any fuzzy patch of light in the night sky. Nowadays, many nebulae are known to be galaxies instead.
  • Many nebulae are gigantic clouds of gas and space dust.
  • Glowing nebulae are named because they give off a dim, red light, as the hydrogen gas in them is heated by radiation from nearby stars.
  • The Great Nebula of Orion is a glowing nebula just visible to the naked eye.
  • Reflection nebulae have no light of their own. They can only be seen because starlight shines off the dust in them.
  • Dark nebulae not only have no light of their own, they also soak up light. They are seen as patches of darkness, blocking light from the stars behind them
  • The Horsehead nebula in Orion is the best-known dark nebula. As its name suggests, it is shaped like a horse‚Äôs head.
  • Planetary nebulae are thin rings of gas cloud which are thrown out by dying stars. Despite their name, they have nothing to do with planets.
  • The Ring nebula in Lyra is the best-known of the planetary nebulae.
  • The Crab nebula is the remains of a supernova that exploded in AD1054.