|2017 2018 2019 2020 2021 2022 2023|
|1990s 2000s 2010s 2020s 2030s 2040s 2050s|
|20th century - 21st century - 22nd century|
- The Alpha Centauri Concordium of Planets is founded to unite the Centaurii races in the Alpha Centauri system. (Star Fleet Technical Manual, Star Trek: Pendragon)
- A robotic mission lands on Europa, a natural satellite of Jupiter in the Sol system. (Federation Spaceflight Chronology, vol. 2)
- 26 January: Three astronauts from the UNSS Lewis and Clark -- Colonel Shaun Geoffrey Christopher, Fontana, and O'Herlihy -- are the first humans to land on Titan, a natural satellite of Saturn in the Sol system. (TOS: "Tomorrow is Yesterday"; Spaceflight Chronology; TOS novel: The Rings of Time; Fandom Star Trek Chronology. Star Trek: Pendragon)
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