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       xkcd - A Webcomic - Voyager 1 (1189)
        
       Image:
 (PNG) voyager_1.png
        
       So far Voyager 1 has 'left the Solar System' by passing through
       the termination shock three times, the heliopause twice, and once
       each through the heliosheath, heliosphere, heliodrome, auroral
       discontinuity, Heaviside layer, trans-Neptunian panic zone,
       magnetogap, US Census Bureau Solar System statistical boundary,
       Kuiper gauntlet, Oort void, and crystal sphere holding the fixed
       stars.
        
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 (DIR) xkcd - A Webcomic - Bonding (1188)
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 (DIR) xkcd - A Webcomic - Time (1190)