Final answer:
The Mariner, Viking, and Pathfinder missions have had significant artistic representations in their exploration of new worlds.
Step-by-step explanation:
The significance of The Mariner in '65, The Viking in '76, and The Pathfinder in '97 in artistic expressions lies in their representation of the exploration and discovery of new worlds.
The Mariner mission in 1965 was the first successful flyby mission to Mars, capturing close-up images of the planet's surface and providing valuable data for future missions.
The Viking mission in 1976 marked the first successful landing on Mars and the first time experiments were conducted to search for signs of life on another planet.
The Pathfinder mission in 1997 introduced the innovative use of a robotic rover, Sojourner, to explore the Martian surface and paved the way for future rovers like Curiosity and Perseverance.