Home›Robotic Mars Exploration Missions›CrewedBrowse ByCrewedFactsCrewedSourcesComments (0)Reader Challenges (0)FactsComparisonField Origin EraWell-attested1962 1CrewedNoCrewed18 entriesYesCrewed1 entrySources1. Wikipedia: Mariner programtier 2Wikimedia FoundationMariner program, lead sectionQuote, Mariner program, lead sectionBetween 1962 and late 1973, NASA's Jet Propulsion Laboratory (JPL) designed and built 10 robotic interplanetary probes named Mariner to explore the inner Solar System, visiting the planets Venus, Mars and Mercury for the first time, and returning to Venus and Mars for additional close observations.View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.