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: 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.⁣⁣ ⁣...