NASA Photo ID: S92-52109           File Name: 10063634.jpg
  Film Type: 4x5                     Date Taken: 12/30/92
  Title: HST image of the Orion's Great Nebula "window-curtain" structure
  Description:
  Hubble Space Telescope (HST) image shows the thin sheets of gas at the edge
  of the Great Nebula in the constellation of Orion.  These thin sheets of
  gas discovered by HST's wide field/planetary camera (WFPC) have been
  compared to  rippled "window-curtains" and mark the boundaries between the
  hot and diffuse  inner regions of the Great Nebula and cooler and denser
  neighboring cloud.   The sheets of gas are seen in light that has been
  emitted by atoms of  gaseous sulfur (shown as red).  Also visible in the
  image is the emitted  light from oxygen and hydrogen which appears in blue
  and green.  The light  emissions of the gases are stimulated by the intense
  ultraviolet radiation  given off from a nearby cluster of particularly hot
  and luminous young stars.  The sulfur emissions are coming from a region
  where the light from the young  stars is"boiling off" material from the
  face of the dense cloud.          
  
  Subject terms:
  HUBBLE SPACE TELESCOPE                  
  INTERSTELLAR GAS                        
  ORION CONSTELLATION                     
  ORION NEBULA                            
  SATELLITE OBSERVATION                   
  

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