50 years ago, NASA sent 2 spacecraft to search for life on Mars – the Viking missions’ findings are still discussed today Viking consisted of two twin orbiters and landers, with experimental chambers in the landers to conduct three biology experiments. Astrobitica September 15, 2025 (Last updated: September 15, 2025) 1 minute read Viking consisted of two twin orbiters and landers, with experimental chambers in the landers to conduct three biology experiments. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: Swissto12 clears PDR for debut small GEO D2D satelliteNext: York Space hits milestone with largest satellite delivery yet