MSGID: 1:153/757.0 604f9ec7   
   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.   
      
                                   2022 August 3   
      
                               Halo of the Cat's Eye   
                       Image Credit & Copyright: Bray Falls   
      
      Explanation: What created the unusual halo around the Cat's Eye nebula?   
      No one is sure. What is sure is that the Cat's Eye Nebula (NGC 6543) is   
      one of the best known planetary nebulae on the sky. Although haunting   
      symmetries are seen in the bright central region, this image was taken   
      to feature its intricately structured outer halo, which spans over   
      three light-years across. Planetary nebulae have long been appreciated   
      as a final phase in the life of a Sun-like star. Only recently however,   
      have some planetaries been found to have expansive halos, likely formed   
      from material shrugged off during earlier puzzling episodes in the   
      star's evolution. While the planetary nebula phase is thought to last   
      for around 10,000 years, astronomers estimate the age of the outer   
      filamentary portions of the Cat's Eye Nebula's halo to be 50,000 to   
      90,000 years.   
      
                        Tomorrow's picture: herculean stars   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
                   NASA Web Privacy Policy and Important Notices   
                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
   --- BBBS/Li6 v4.10 Toy-6   
    * Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757)   
   SEEN-BY: 1/19 123 15/0 16/0 19/10 37 90/1 105/81 106/201 120/340 123/130   
   SEEN-BY: 123/131 129/305 331 134/100 153/135 757 7715 203/0 218/700   
   SEEN-BY: 218/840 221/1 6 242 360 227/114 229/110 111 112 113 206 317   
   SEEN-BY: 229/400 424 426 428 470 664 700 240/5832 266/512 280/5003   
   SEEN-BY: 280/5006 282/1038 301/1 317/3 320/119 219 319 322/0 757 335/364   
   SEEN-BY: 341/66 342/200 396/45 423/81 460/58 633/280 712/848 4500/1   
   PATH: 153/757 221/6 1 320/219 229/426