Which planet did the "Viking 1" spacecraft send surface images of, starting in 1976?

The Viking 1 spacecraft sent surface images of Mars starting in 1976. The Viking mission was specifically designed to explore and study the Martian surface. Viking 1 successfully orbited around Mars, while its lander touched down on the planet's surface, capturing and transmitting the first-ever high-resolution images of Mars' terrain. The spacecraft's mission provided crucial information regarding the planet's geology, climate, and the potential for supporting life. The Viking missions greatly expanded our knowledge about Mars and paved the way for further exploration and research of the red planet.