Question

Which of these surface features, discovered by the first spacecraft mission (Mariner 4) to Mars, was NOT expected to be seen on Mars?

A.craters
B.giant volcanoes
C.expansive canyons
D.canals
E.running water

Answer 1

The feature that was NOT expected to be seen on Mars by the Mariner 4 spacecraft mission was running water.

Step-by-step explanation:

The feature that was NOT expected to be seen on Mars by the Mariner 4 spacecraft mission was E) running water. The Mariner 4 mission, launched in 1964, provided the first close-up images of Mars. While the mission discovered several surface features like craters, giant volcanoes, expansive canyons, and observed channels on Mars, it did not detect any evidence of running water.