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   TZUTC: -0700   
   CHRS: LATIN-1 2   
                           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.   
      
                                    2024 May 10   
      
                         Simulation: Two Black Holes Merge   
             Simulation Credit: Simulating eXtreme Spacetimes Project   
      
      Explanation: Relax and watch two black holes merge. Inspired by the   
      first direct detection of gravitational waves in 2015, this simulation   
      plays in slow motion but would take about one third of a second if run   
      in real time. Set on a cosmic stage, the black holes are posed in front   
      of stars, gas, and dust. Their extreme gravity lenses the light from   
      behind them into Einstein rings as they spiral closer and finally merge   
      into one. The otherwise invisible gravitational waves generated as the   
      massive objects rapidly coalesce cause the visible image to ripple and   
      slosh both inside and outside the Einstein rings even after the black   
      holes have merged. Dubbed GW150914, the gravitational waves detected by   
      LIGO are consistent with the merger of 36 and 31 solar mass black holes   
      at a distance of 1.3 billion light-years. The final, single black hole   
      has 63 times the mass of the Sun, with the remaining 3 solar masses   
      converted into energy radiated in gravitational waves.   
      
               Today's Event Horizon: It's Black Hole Week at NASA!   
                         Tomorrow's picture: What's 42-5?   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
                      NASA Web Privacy, Accessibility Notices   
                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
   --- BBBS/Li6 v4.10 Toy-7   
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