NASA's Viking 1 and Viking 2 landed on Mars in 1976.
Viking 1 landed on Mars in July 1976.
Mars
Mars. Viking 1 and Viking 2 both landed on the planets surface in 1976.
It was Mars 2, from the Soviet Mars Lander Program.
The first man made probes to successfully land on the surface of Mars were two Soviet probes; Mars 2 on November 27 and Mars 3 on December 2, 1971, but both ceased communicating within seconds of landing. The NASA Viking program had two landers; Viking 1 remained operational for six years, Viking 2 for three years after their 1976 landing.
First ever satellite to land on the planet Mars was a Russian probe called Mars 2. Albeit it did not land but crashed. The first successful probe to land on Mars was Mars 3 sent by the Russians, however the probe was operational for 15 minutes after landing on Mars. The first American probe to land on Mars was the Viking 1 on the 20th of July 1976.
Viking-II is a Mars Rover.
viking 1 and viking 2
NASA's mariner 4,6,7 and 9 NASA's viking land 2 the mars global surveyor and the pathfinder
The first United States spacecraft to land on Mars was Viking 1 on June 19, 1976. It was followed by Viking 2 on September 3, 1976.
They were rover missions to Mars.