Good fun, and well worth your time as long as you don't expect it to be anything but what it is. A good rollicking space adventure in the tradition of Have Spacesuit Will Travel or Red Planet. Or to take a more recent example, Scalzi's Zoe's Tale. Bright, self assured young person with an engineering and science background takes some interplanetary jaunts, has some adventures thwarts some baddies and learns a few things along the way. Fortunately for me I enjoy the bejeebers out of that sort of thing so I had a grand time reading it.