Voyager 1's two-day command cycle as it drifts toward interstellar space
Voyager 1 is about 16 billion miles from Earth and moving away from the Sun, so a command sent at the speed of light takes roughly 22.5 hours to reach it and the reply takes about 22.5 hours to return, creating a two‑day command‑and‑response cadence. After a memory‑chip failure in 2023, a 2024 patch and careful line‑by‑line code review restored coherent data transmission, and the current data rate is about 160 bits per second as the probe slowly powers down its instruments. By November 2026 Voyager 1 will become the first human‑made object to pass one light‑day from Earth, while Voyager 2 remains on a longer, slower path toward similar autonomy and fading transmissions.
