NASA’s Viking 2 spacecraft entered the orbit of planet Mars on 7th August 1976. It had been launched on 9th September 1975. The lander part of the craft landed on Mars on 3rd September 1976.
NASA’s Viking 2 spacecraft entered the orbit of planet Mars on 7th August 1976. It had been launched on 9th September 1975. The lander part of the craft landed on Mars on 3rd September 1976.
