Explorers
Series: Star Trek: Deep Space Nine
Airdate: May 14, 1995 | Year Set: 2371
Season 3, Episode 22
Summary
An invigorated Sisko returns from Bajor and decides to build a replica of an eight hundred-year-old Bajoran lightship, hoping to use it to prove that ancient Bajoran explorers could have made it to Cardassia before developing warp drive.