Is the story of the leap fiction or not fiction?

A fiction story is one that is not real, such as a fantasy or a fable. Fiction stories can, however, be based on real life events.

If it is just a book with facts about Neptune, then its nonfiction. But if your book is a story, say, people go to Neptune and discover life there, that's not factual, so it's fiction.

fictionalized history. but non fiction

They actually wrote about themselves and how they smoked so much good pot!

These are some fiction tales : "the rhino oak tree" tale is about a boy that had a rhino as a pet and one day that rhino thought the boy was dead so the rhino tried to kill itself by jamming its horn...