Answer:
The ship he was working on did not have enough "handholds" aka places to grab onto
Explanation:
"Cernan was tasked to do one of the first American spacewalks, which ended up being immensely difficult as the spacecraft was not designed with enough handholds." (space.com)
Since there is no gravity in space, something to keep you down to the ground, it is important to have "something" else keeping you there, whether that be a rope or a handle. Since Cernan did not have that, it made his task more difficult.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
