This sounds like a great read and something my space-loving sons would love. I hadn't thought about the three friends being a trope. I think it's because writers are trying to appeal to both girls and boys, which is why you often find more boy-girl friendships in books than in real life. Thanks for your thoughtful review!
Jenni Enzor (jennienzor.blogspot.com)
You're welcome. Thanks for the comment. These books are definitely high on kid appeal. And I think you're right about them trying to appeal to both genders.
Jenni Enzor (jennienzor.blogspot.com)