A really fun book for middle-grade readers written as a conversation between the author and a kid with lots of questions. The text is very conversational, with the narrator often interrupting themself to share a wild fact or reassure the reader that really, honestly, a black hole eating up Earth is not something they need to worry about. It's excellently illustrated with beautiful space photos that are -- wonder of wonders -- both captioned in detail and credited properly. If your middle-grade kid has lots of questions about black holes or dark matter or diamond rain or colliding galaxies or what happens if you pee in space (the pee first boils and then freezes into little pee snowflakes), this is the book for you! ( )