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                           Astronomy Picture of the Day   
      
       Discover the cosmos! Each day a different image or photograph of our   
         fascinating universe is featured, along with a brief explanation   
                       written by a professional astronomer.   
      
                                 2025 February 22   
      
                                   Rima Hyginus   
                   Image Credit & Copyright: Vincenzo Mirabella   
      
      Explanation: Rima Hyginus is a spectacular fissure, some 220 kilometers   
      long, found near the center of the lunar near side. Easy to spot in   
      telescopic views of the Moon, it stretches top left to bottom right   
      across this lunar closeup. The image was made with exaggerated colors   
      that reflect the mineral composition of the lunar soil. Hyginus crater   
      lies near the center of the narrow lunar surface groove. About 10   
      kilometers in diameter, the low-walled crater is a volcanic caldera,   
      one of the larger non-impact craters on the lunar surface. Dotted with   
      small pits formed by surface collapse, Hyginus rima itself was likely   
      created by stresses due to internal magma upwelling and collapse along   
      a long surface fault. The intriguing region was a candidate landing   
      site for the canceled Apollo 19 mission.   
      
                        Tomorrow's picture: northern Saturn   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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