Bye, Voyager
Wrong movie. Really, the circumstances call for this one to be referenced. Voyager I has officially passed beyond the solar system, sending a farewell transmission of its transition across the heliospheric boundary. (Additional pop-culture references: Starman, in which Jeff Bridges comes to earth because of Voyager's greeting card contents, and By Any Other Name, that episode of Star Trek in which Kirk et al. are hijacked beyond the galactic boundary.)