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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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        Summary 
        
         
          
           | Description | 
           
             English: As Hubble’s third repair mission unwinds, ground controllers send commands and instructions to the telescope while monitoring data from the observatory to check that it continues to function correctly. This picture, taken in 1999, shows command and control operations at the Space Telescope Operations Center at NASA’s Goddard Space Flight Centre in Greenbelt, Md. 
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           | Date | 
           1999  (13 May 2009 (original upload date)) | 
          
          
           | Source | 
           Transferred from  en.wikipedia; transferred to Commons by  User:Anrie using  CommonsHelper.  (Original text :  http://www.hubblesite.org/) | 
          
          
           | Author | 
            http://www.hubblesite.org/. Original uploader was  Goodmanjoon at  en.wikipedia | 
          
          
           Permission ( Reusing this file) | 
           
             PD-AUTHOR.  (Original text : The image is in public domain) 
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         Licensing 
        
         
          
           | Public domainPublic domainfalsefalse | 
          
         
         
          
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           This file is in the  public domain because it was solely created by  NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See  Template:PD-USGov,  NASA copyright policy page or  JPL Image Use Policy.) | 
           
            
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           Warnings:
             - Use of  NASA logos, insignia and emblems are restricted per US law  14 CFR 1221.
 
             - The NASA website hosts a large number of images from the  Soviet/ Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
 
             - Materials based on  Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the  STScI.  See also {{ PD-Hubble}} and {{ Cc-Hubble}}.
 
             - The  SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use.  
 
             - Images featured on the  Astronomy Picture of the Day (APOD) web site may be copyrighted.  
 
             
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