They were rover missions to Mars.
This question is in the wrong section. (Traditional Viking houses were one room only.)
3 1:fishing 2:traveling 3:war
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.
viking 1and/or 2
viking 1 and viking 2
In 1976 - None, ditto 1977, 1978, 1979 and all the other years.
Lander
yes
yes
Mariner 9, Mariner5, Viking 1 and Viking 2
The United States launched the Viking space probes. Viking 1 was launched on August 20, 1975, and Viking 2 was launched on September 9, 1975. These probes were part of NASA's Viking program to study Mars.
1 to 2 rupee
1976.
The viking rovers, vikings I and II.
Viking Lander 1 and Viking Lander 2 Yes, but there are more than that.
Viking 1 was launched on August 20, 1975, and the second craft, Viking 2, was launched on September 9, 1975. Viking 1 entered Mars orbit on June 19, 1976. The Viking 1 touched down on the surface of Mars on July 20, 1976, and was joined by the Viking 2 on September 3.