Unlike screenplays, there are no budget constraints in a book. You can write, “The entire solar system exploded, planet at a time,” as easily as you can write, “a leaf fell from the tree.”
Let you imagination run wild. You can say anything, do anything, break any law, any taboo, any rule of physics. Your audience will follow you anywhere as long as you keep their interest.
So, follow your Muse wherever it leads. No idea is too big or too small. Write about the things you are most passionate about, and it will come through your words, between the lines, and right into the hearts and souls of your readers.