People realize workable warping space tech and set out to explore the nearest star, Alpha Centauri, which is actually a binary star system and probes have confirmed two Earth like planets orbiting both stars in each ones liquid water zone. They get there and they find animal and plant life in abundance, with many samples being so close to similar life on Earth it suprises them. They find more and more stuff and with cellular analysis, etc, they come to the mind bending and scary conclusion that both planets have been terraformed to replicate Earth with many species coming from Earth.
https://www.amazon.com/Alpha-Centauri-First-Landing-T-Space-ebook/dp/B01M5EVF2O/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1507863661&sr=1-1&keywords=alpha+centauri:+first+landing
A nice entertaining and believable read with no brain sucking aliens or shoot em ups. There are 5 parts to it and all entertaining.