Voyager 1 is now the farthest human-made object from Earth. Launched in 1977, it flew past Jupiter and Saturn, sharing amazing images and facts about these planets. It crossed the asteroid belt early and passed its twin, Voyager 2, on the way out. In 2012, Voyager 1 entered interstellar space — a region filled with dust and particles from long-dead suns. Voyager 2 followed in 2018, heading through a different path that also took it by Uranus and Neptune. Signals from Voyager 1 now need 23 hours and 32 minutes to reach Earth. By late 2026, it is expected to be 16.1 billion miles (about 25.9 billion km) away. At this distance, radio signals will take a full 24 hours to reach it. While this is not a sudden event, it marks a quiet milestone of extreme distance. Even so, Voyager 1 keeps moving outward, carrying instruments that measure tiny particles and magnetic fields far from the Sun. Voyager 2 is also sending data from interstellar space. It is the only spacecraft to have directly studied Uranus and Neptune, giving us unique insights. Both Voyagers travel beyond the solar system into a slow and diffuse region shaped by the Sun's past. Originally designed to study the giant planets, the Voyagers made surprising discoveries like volcanoes on Jupiter’s moon Io and the complex rings of Saturn. Their mission was extended into the Voyager Interstellar Mission to study cosmic rays, particles, and magnetic fields in space no one has explored before. The slow signal travel time reminds us just how vast space is. Voyager 1 drifts far beyond anything humans can visit, quietly sensing its surroundings. It carries memories of early planetary exploration and now bridges us to the unknown reaches of the cosmos. As their signals take longer, these spacecraft continue to send valuable knowledge from the edge of our solar bubble.