NASA Launches Voyager 1 from Cape Canaveral on Sept. 5, 1977

On September 5, 1977, Voyager 1 was launched from Cape Canaveral, Florida, aboard a Titan III rocket, marking the beginning of the first interplanetary mission designed to study the outer planets. The launch was part of NASA’s Voyager program, which aimed to send two spacecraft on a trajectory that would allow them to visit Jupiter and Saturn, then continue outward into the heliosphere.

Voyager 1 carried a suite of scientific instruments—including cameras, spectrometers, and magnetometers—to capture data on planetary atmospheres, rings, moons, and magnetic fields. The spacecraft’s trajectory, achieved by a series of gravity assists from Jupiter and Saturn, enabled it to travel beyond the orbit of Neptune in the 1990s and enter interstellar space in 2012. The mission yielded unprecedented images and measurements that reshaped understanding of the outer Solar System and provided the first direct evidence of the heliopause.

Today, Voyager 1 remains the most distant human‑made object, continuing to transmit data back to Earth as it traverses the interstellar medium. Its legacy endures in the wealth of scientific knowledge it delivered and in the ongoing exploration of the far reaches of space.