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       xkcd - A Webcomic - Schwarzschild's Cat (2088)
        
       Image:
 (PNG) schwarzschilds_cat.png
        
       Cats can be smaller than the critical limit, but they're
       unobservable. If one shrinks enough that it crosses the limit, it
       just appears to get cuter and cuter as it slowly fades from view.
        
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