Fifty Years Since Mars' First Glimpse: A Landmark for Space Exploration The photographs beamed back by NASA's Viking 1 mission on July 20, 1976, marked a watershed moment in space exploration.
The grainy images of red sand and rock sent back by the robotic arm humanized Mars in a way that was both intimate and awe inspiring.
One of the most striking aspects of these early images is their raw quality – a testament to the fledgling state of space technology at the time.