I #AmReading Children of Ruin by Adrian Tchaikovsky
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Thousands of years ago, Earth's terraforming program took to the stars. On the world they called Nod, scientists discovered alien life -- but it was their mission to overwrite it with the memory of Earth. Then humanity's great empire fell, and the program's decisions were lost to time.
https://app.thestorygraph.com/books/7e8262d9-508e-478f-bbd4-21434d4d1b2f