This is a time travel story in the near future, and then the far distant future. It is a war in space that sometimes reaches the surface of a planet. It is an alien invasion story, first them invading us and they we turn the tables on them. The tale begins with a battle out near the dwarf planet Pluto, moves into deeper space and returns to Mars but it ends on Earth. This is a book that explores some of the paradoxes of time travel but has an original concept that is surprising in the end.
Used availability for Kevin Randle's On the Second Tuesday of Next Week