Larklight is a science fiction novel written for a younger audience, a darling chapter book that would be great for kids in 5-7th grades.
Philip Reeve is a British author, and he has set this novel in an "alternate" reality in Victorian England: however, these plucky Englishmen have discovered how to travel the cosmos based on principles learned (or given) to Sir Isaac Newton.
The young man, Art Mumby and his sister Myrtle are hurtled into an adventure that eventually circles back to their home, Larklight, which is a space ship that is orbiting the moon.
It's a very British book; All the spelling, punctuation, and issues are distinctively British. There's a sense of social class, racial intolerance, and yet, Reeve has people from all planets co-mingling and enjoying what they can from others.
This is a fast moving adventure, and I enjoyed it very much!