This is a wonderful book, fast-paced and exciting. It echoes classic space operas and scientific romances of the past, Star Wars, and even the works of Asimov, to whom it is dedicated (the laws of robotics are mentioned.) Hardly "hard" science fiction, nonetheless it contains some interesting material on terraforming (the reengineering of planets and moons to create Earth-like environments). Basically, this is a story of interplanetary politics within our solar system.
Don't expect the political depth of a Heinlein, the scientific detail of Poul Anderson, or in-depth characterization. This is a fun novel with a little extra to keep you intrigued. The main villain reminds me of General Grievous from Star Wars episode 3 (this novel of course predates that movie.)