Mariner 8

Mariner 8 (also known as Mariner H) had onboard systems identical to Mariner 6, Mariner 7, and Mariner 9. This vehicle was destroyed on launch due a failure of its Atlas Centaur launch vehicle's autopilot.

• Intended Mission: Mars Survey
• Launched: 8 May 1971
• Total Weight: 2200 pounds

See also: Mariner program, Unmanned space missions