Exploration Expansion

Soviet long‑duration human spaceflight and endurance records (1969–1991)

1970 - 1995

Soviet-era Development of the Northern Sea Route (1932–1991)

1932 - 1991

Soviet and Russian Nuclear Icebreaker Program (1957–present)

1957 - 2025

Southern Silk Road: Khotan–Kashgar–Kucha route (2nd–10th century CE)

101 - 1006

Southern Ocean Observing System expeditions and observing network (2009–present)

2009 - 2026

Southern Dispersal along the Arabian and South Asian coasts (c. 70–50 ka)

South Korea's Broadband Rollout and National ICT Buildout (1995–2010)

1995 - 2005

South Atlantic Cable System (SACS) (2017–2018) — Angola–Brazil connectivity project

2009 - 2018

Song dynasty merchant voyages to Southeast Asia (960–1279)

960 - 1279

Solutrean hypothesis and associated Atlantic-route claims (proposed events c. 22,000–12,000 BP)

22000 BCE - 2016

Sogdian and bilingual Buddhist translations and inscriptions on the Silk Road (5th–10th century CE)

500 - 1011

Socioeconomic Impacts of the Canal on Panamanian Society (1903–present)

1903 - 2025