"One Small Step" is the 128th episode of the television series Star Trek: Voyager, the eighth episode of the sixth season. A 24th century spacecraft, the USS Voyager, encounters a 21st century Mars spacecraft in an anomaly. This episode's teleplay was written by Mike Wollaeger, Jessica Scott, Bryan Fuller, and Michael Taylor, from a story by Wollaeger and Scott. Main cast regular Robert Picardo directs for the second time, and Phil Morris guest stars. This television episode aired on UPN on November 17, 1999.