
Launched in 1977, this dual-spacecraft mission took advantage of a rare planetary alignment to conduct a "Grand Tour" of the gas giants. This remarkable journey through the discoveries Voyager 1 & 2 made began at Jupiter, where the probes revealed the planet's complex, turbulent atmosphere and, most astonishingly, active volcanoes erupting on its moon, Io—the first ever observed beyond Earth.
The odyssey continued to Saturn, where Voyager's cameras unveiled the breathtaking and intricate structure of its famous rings, discovering braids, kinks, and spokes that baffled scientists. The mission also provided detailed views of the enigmatic, haze-shrouded moon, Titan.
While Voyager 1's trajectory sent it heading out of the plane of the solar system, Voyager 2 continued its solitary path, making the first-ever close-up encounters with the ice giants. This journey through the discoveries Voyager 1 & 2 made revealed Uranus's strange, tilted magnetic field and Neptune's surprisingly dynamic weather, including a "Great Dark Spot" reminiscent of Jupiter's storm. On Neptune's moon Triton, it discovered icy cryovolcanoes spewing nitrogen frost, a finding that expanded our definition of active worlds.
This amazing journey did not end there. After completing their planetary encounters, the two spacecraft continued their journey. In the years that followed, Voyager 1 and 2 passed beyond the influence of our Sun and are now traveling through interstellar space, measuring an unexplored interstellar environment.
Even today, decades after their launch, we continue to be captivated by a journey through the discoveries Voyager 1 & 2 made, as they send back faint signals from beyond our solar system, pioneers in the true final frontier.