Shattered Earth — Cliff Ball

Advanced humans, called Terrans, leave Earth when its threatened by a massive meteor. The remaining humans on Earth fall back into primitiveness. The advanced humans, and a group of aliens, the Ragnor, involve Earth in an interstellar war. Thousands of years later, the humans of Earth decide to do something about this. Interstellar politics will never be the same again once Earth is done with their revenge. These Terrans involve themselves throughout human history. Some play as King Arthur and Merlin. Another is a scientist, whose name is Galileo, and he gets into all sorts of trouble for challenging official orthodoxy about the sun, the Earth, and which one is revolving around the other. Then, we have Amelia Earhart, who has a very valid reason for disappearing.

When an alien spaceship gets shot down over Roswell in 1947, President Truman orders the creation of Area 51, Project Blue Book and Sign, and has the United States embark on a plan that will culminate 60 years in the future. Nothing will ever be the same again when the United States gets involved in interstellar politics. But, the whole plan backfires when Earth ends up the worse for wear over it. Other species find out what Earth did, since no one else was bold enough to even try, so they want to help bring down the Ragnor once and for all. The new President of the United States imagines a galactic federation or a republic, but, none of the other species wants anything to do with it. With the help of the Terran who is known to Earth as Amelia Earhart, they plot to destroy the Ragnor once and for all. Will Earth learn never to interfere in interstellar politics or will the humans finally succeed in getting all the aliens in the universe to leave them alone?