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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.   
      
                                   2022 March 27   
      
                            Titan Seas Reflect Sunlight   
               Image Credit: NASA, JPL-Caltech, U. Arizona, U. Idaho   
      
      Explanation: Why would the surface of Titan light up with a blinding   
      flash? The reason: a sunglint from liquid seas. Saturn's moon Titan has   
      numerous smooth lakes of methane that, when the angle is right, reflect   
      sunlight as if they were mirrors. Pictured here in false-color, the   
      robotic Cassini spacecraft that orbited Saturn from 2004 to 2017 imaged   
      the cloud-covered Titan in 2014 in different bands of cloud-piercing   
      infrared light. This specular reflection was so bright it saturated one   
      of Cassini's infrared cameras. Although the sunglint was annoying -- it   
      was also useful. The reflecting regions confirm that northern Titan   
      houses a wide and complex array of seas with a geometry that indicates   
      periods of significant evaporation. During its numerous passes of our   
      Solar System's most mysterious moon, Cassini has revealed Titan to be a   
      world with active weather -- including times when it rains a liquefied   
      version of natural gas.   
      
                      Tomorrow's picture: stars of the south   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                                & Michigan Tech. U.   
      
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