Review
Voyager 1 approaches a historic milestone as signals from Earth soon take an entire day to reach humanity’s most distant probe
Voyager 1, launched in 1977, remains the most distant spacecraft ever built by humanity. Now traveling through interstellar space beyond the heliopause, the probe continues sending back valuable data about the environment between stars. Soon, radio signals from Earth will take a full day to reach the spacecraft, marking a historic milestone that highlights just how far this tiny explorer has traveled.