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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 4   
      
                             The Multiwavelength Crab   
      NASA, ESA, G. Dubner (IAFE, CONICET-University of Buenos Aires) et al.;   
       A. Loll et al.; T. Temim et al.; F. Seward et al.; VLA/NRAO/AUI/NSF;   
                                   Chandra/CXC;   
                 Spitzer/JPL-Caltech; XMM-Newton/ESA; Hubble/STScI   
      
      Explanation: The Crab Nebula is cataloged as M1, the first object on   
      Charles Messier's famous list of things which are not comets. In fact,   
      the Crab is now known to be a supernova remnant, expanding debris from   
      massive star's death explosion, witnessed on planet Earth in 1054 AD.   
      This brave new image offers a 21st century view of the Crab Nebula by   
      presenting image data from across the electromagnetic spectrum as   
      wavelengths of visible light. From space, Chandra (X-ray) XMM-Newton   
      (ultraviolet), Hubble (visible), and Spitzer (infrared), data are in   
      purple, blue, green, and yellow hues. From the ground, Very Large Array   
      radio wavelength data is shown in red. One of the most exotic objects   
      known to modern astronomers, the Crab Pulsar, a neutron star spinning   
      30 times a second, is the bright spot near picture center. Like a   
      cosmic dynamo, this collapsed remnant of the stellar core powers the   
      Crab's emission across the electromagnetic spectrum. Spanning about 12   
      light-years, the Crab Nebula is 6,500 light-years away in the   
      constellation Taurus.   
      
                      Tomorrow's picture: from somewhere else   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                         A service of: ASD at NASA / GSFC   
                                & Michigan Tech. U.   
      
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