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        Summary 
        
         
          
           | DescriptionTempel 1 Hartley 2 comparison.jpg | 
           
            English: This image shows the nuclei of comets Tempel 1 and Hartley 2, as imaged by NASA's Deep Impact spacecraft, which continued as an extended mission known as EPOXI.  Tempel 1 is five times larger than Hartley 2. Visible jets are easily seen in images of Hartley 2, but required extensive processing to be seen in images of Tempel 1. 
             Tempel 1 is 7.6 kilometers (4.7 miles) in the longest dimension. Hartley 2 is 2.2 km (1.4 miles) long.  The Tempel 1 image was built up from more than 25 images captured by the impactor targeting sensor on July 4, 2005. The Hartley 2 image was obtained by the Medium- Resolution Imager on Nov. 4, 2010.  
            Polski: Porównanie rozmiarów jąder komet Tempel 1 i Hartley 2. Obie sfotografowany przez sondę Deep Impact/EPOXI. Temepl 1 ma 7,6 kilometra w najdłuższym miejscu. Hartley 2, 2,2 km. 
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           | Date | 
           18 November 2010, composited from: 
             - 4 November 2010 (Hartley 2)
 
             - 4 July 2005 (Tempel 1)
 
             
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           | Source | 
           
            
            
             
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              This image or video was catalogued by Jet Propulsion Lab of the United States  National Aeronautics and Space Administration (NASA) under Photo ID: PIA13629.   This tag does not indicate the copyright status of the attached work. A normal  copyright tag is still required. See  Commons:Licensing for more information. 
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           | Author | 
           NASA / JPL-Caltech / UMD | 
          
         
         
         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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