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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 10   
      A snowy landscape sits below a star filled sky. Dominating the frame is   
        a large aurora in red, green, yellow, purple, white. Please see the   
                    explanation for more detailed information.   
      
                          Auroral Hummingbird over Norway   
                     Image Credit & Copyright: Mickael Coulon   
      
      Explanation: Is this the largest hummingbird ever? Although it may look   
      like a popular fluttering nectarivore, what is pictured is actually a   
      beautifully detailed and colorful aurora, complete with rays   
      reminiscent of feathers. This aurora was so bright that it was visible   
      to the unaided eye during blue hour -- just after sunset when the sky   
      appears a darkening blue. However, the aurora only looked like a   
      hummingbird through a sensitive camera able to pick up faint glows. As   
      reds typically occurring higher in the Earth's atmosphere than the   
      greens, the real 3D shape of this aurora would likely appear   
      unfamiliar. Auroras are created when an explosion on the Sun causes   
      high energy particles to flow into the Earth's atmosphere and excite   
      atoms and molecules of nitrogen and oxygen. The featured image was   
      captured about two weeks ago above Lyngseidt, Norway.   
      
                           Tomorrow's picture: fly high   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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