The First Formic War Series by Orson Scott Card, Aaron Johnston

HUMANS THOUGHT THEY WERE ALONE IN THE GALAXY. UNTIL NOW. A hundred years before Ender's Game, humanity is slowly making its way out to the planets of the solar system, exploring and mining asteroids. The ship El Cavador is far from Earth, in the deeps of the Kuiper Belt, beyond Pluto. When the ship's telescopes pick up a fast-moving object coming in-system, they're unsure what to make of it... moreHUMANS THOUGHT THEY WERE ALONE IN THE GALAXY. UNTIL NOW. A hundred years before Ender's Game, humanity is slowly making its way out to the planets of the solar system, exploring and mining asteroids. The ship El Cavador is far from Earth, in the deeps of the Kuiper Belt, beyond Pluto. When the ship's telescopes pick up a fast-moving object coming in-system, they're unsure what to make of it. Little do they know that this object is the most important thing to happen to the human race in a million years. It's humanity's first contact with an alien race. The First Formic War is about to begin. BOOK ONE OF THE FIRST FORMIC WAR less

One hundred years before Ender's Game the aliens arrived on Earth with fire and death. This is the story of the First Formic War. Victor beat the alien ship to Earth, but just barely. But it wasn't enough to convince skeptical governments that there was a threat.

The story of The First Formic War continues in Earth Awakens.Nearly 100 years before the events of Orson Scott Card's bestselling novel Ender's Game, humans were just beginning to step off Earth and out into the Solar System. A thin web of ships in both asteroid belts; a few stations; a corporate settlement on Luna. No one had seen any sign of other space-faring races; everyone expected that First Contact, if it came, would happen in the future, in the empty reaches between the stars... moreThe story of The First Formic War continues in Earth Awakens.Nearly 100 years before the events of Orson Scott Card's bestselling novel Ender's Game, humans were just beginning to step off Earth and out into the Solar System. A thin web of ships in both asteroid belts; a few stations; a corporate settlement on Luna. No one had seen any sign of other space-faring races; everyone expected that First Contact, if it came, would happen in the future, in the empty reaches between the stars. Then a young navigator on a distant mining ship saw something moving too fast, heading directly for our sun.When the alien ship screamed through the solar system, it disrupted communications between the far-flung human mining ships and supply stations, and between them and Earth. So Earth and Luna were unaware that they had been invaded until the ship pulled into Earth orbit, and began landing terra-forming crews in China. Politics and pride slowed the response on Earth, and on Luna, corporate power struggles seemed more urgent than distant deaths. But there are a few men and women who see that if Earth doesn't wake up and pull together, the planet could be lost. less