NASA Photo ID: S90-48729           File Name: 10063633.jpg
  Film Type: 4x5                     Date Taken: 09/21/90
  Title: HST image of Gravitational Lens G2237 + 305 or "Einstein Cross"
  Description:
  European Space Agency (ESA) Faint Object Camera (FOC) science image was
  taken  from the Hubble Space Telescope (HST) of Gravitational Lens G2237 +
  305 or  "Einstein Cross".  The gravitational lens G2237 + 305 or "Einstein
  Cross"  shows four images of a very distant quasar which has been
  multiple-imaged by  a relatively nearby galaxy acting as a gravitational
  lens.  The angular  separation between the upper and lower images is 1.6
  arc seconds.  Photo was  released from Goddard Space Flight Center (GSFC)
  09-12-90.               
  Subject terms:
  FAINT OBJECTS                           
  GRAVITATIONAL LENSES                    
  HUBBLE SPACE TELESCOPE                  
  QUASARS                                 
  SPACEBORNE ASTRONOMY
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