Gravity Wars Books in Order

Chief Marshal Assur plans to destroy humanity by guiding three asteroids into Earth with an upgraded Valiant fleet. Earth’s divided forces must unite and build a defense capable of stopping the ships before the extinction campaign reaches its target.

A refugee ship flees the Vims across interstellar space while pursuing missiles threaten generations aboard. On Earth, a powerful businessman and a marine commander develop nuclear-propelled spacecraft as humanity faces an approaching alien conflict.

Aliens seize the Moon and prepare mass drivers to bombard Earth with lunar rocks. John Steele leads an elite commando team on a desperate raid, trying to stop the weapons before humanity is forced into submission.

Aliens on Titan build a vast railgun capable of devastating Earth’s industry. Humanity prepares nuclear-propelled warships and slower stealth craft, knowing that decisions made now will take years to determine the outcome at Saturn.