A dual Venus-Halley's Comet mission launched in 1984 that dropped a lander and balloon on Venus before continuing on to make the first-ever close observations of a comet's nucleus in March 1986.

16 Psyche

A massive M-type asteroid between Mars and Jupiter thought to be the exposed iron core of an ancient protoplanet, making it a unique target for NASA's Psyche mission.

A robotic spacecraft that achieved the first soft landing on the lunar far side in January 2019, deploying the Yutu-2 rover to explore the South Pole-Aitken basin and conduct pioneering radio astronomy observations from the Moon's surface.