There's a short story by Heinlein called "The Green Hills of Earth" - it was a very short one, not even a novella - I think 10-15 pages?
I seldom like short stories, I feel like they end just as you're getting invested in the plot. But this one was the first story (long or short) that I've read in a long time that, completely honestly, brought tears to my eyes.
Highly recommended.