They’re the only human-made spacecraft to ever explore interstellar space. And they’re still going.
The twin Voyager spacecraft launched 45 years ago to become NASA’s longest-operating mission. Designed to take images of the large outer planets up close, the twin probes would eventually reach the space between the stars — Voyager 1 in 2012 and Voyager 2 in 2018. With 3 million times less memory than a smartphone, they continue to beam back data via the Deep Space Network, challenging theories about the shape of the heliosphere (the Sun’s boundary of influence). The mission discovered new moons, active volcanoes, and even a ring system around planet Uranus. The plucky probes are destined to wander the Milky Way forever as ambassadors of the solar system.
More: https://voyager.jpl.nasa.gov
Image Description 1: A 1979 closeup shot of Jupiter’s Great Red Spot, a hurricane-like storm with orange and brown swirling cloud bands. Bluish, gray, and brown clouds surround the storm.
Image Description 2: Saturn tilted at an angle with its rings pointed to the upper right of the screen. The planet appears tan with differently-hued cloud bands across it. Three of its moons orbit in front of the planet, at the bottom of the image. One casts a round shadow on the planet.
Image Description 3: A black-and-white view of a crescent planet Uranus during a Voyager 2 flyby on January 24, 1986.
Image Description 4: Neptune is seen as a deep blue planet with a dark blue storm spot. White clouds of methane speckle the image. The spacecraft conducted the first close-up observations of the planet between June 5 and Oct. 2, 1989.
Credit: NASA/JPL-Caltech
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