Voyager 1
Permanent link to this comic:
https://xkcd.com/1189/
Image URL (for hotlinking/embedding):
https://imgs.xkcd.com/comics/voyager_1.png
Number of times Voyager 1 has left the solar system.
[[tally marks indicating 22]]
{{Title text: 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.}}