Kids story

I don't know if this is the right place to ask this, but it's the only place I know that can solve this There was a story from when I was a kid and I was wanting to read it again but can't remember it's name Basically, one of the points of a star falls to earth and a kid finds it... Ik it isn't a good description and I'm sorry if I'm being too vague, it's all I can remember