It was not until 1989 that Sagan's idea was put into practice, but then instrument calibrations delayed the operation further, and the personnel who devised and transmitted the radio commands to Voyager 1 were also being laid off or transferred to other projects.
Baru pada tahun 1989 gagasan Sagan dipraktikkan, namun kalibrasi instrumen menunda operasi lebih lanjut, dan personil yang merancang dan mengirimkan perintah radio ke Voyager 1 juga diberhentikan atau dipindahkan ke proyek lain.