I watched a film a few years back on netflix UK, the animated film was about a man/boy who fixes/uses his telescope. He then builds a space rocket to go to mars or a red planet of some sort. The planet turns out to be deserted and all that remains is a man in a shack. He then has to refill his rocket, possibly with the help of the man but after that i cannot remember what happened. The film also may have featured no dialogue.