The term "Space Rider" is not widely recognized as an established concept in reliable encyclopedic sources. No confirmed references link this term to a specific historical event, technological system, academic discipline, or documented entity.
It may be interpreted as a compound noun combining "space," referring to outer space or aerospace contexts, and "rider," which could imply someone or something that travels upon or operates within a vehicle or wave. In speculative or informal usage, "space rider" might colloquially describe an astronaut, a space traveler, or a fictional character involved in space exploration. Alternatively, it could refer to a conceptual or fictional spacecraft or program.
However, as of now, no official space mission, vehicle, or program widely known under the exact name "Space Rider" has been documented in authoritative sources. Accurate information is not confirmed.