Red Mars by Kim Stanley Robinson
Mars Trilogy For centuries, the barren, desolate landscape of the red planet has beckoned to humankind. Now a group of one hundred colonists begins a mission whose ultimate goal is to transform Mars into a more Earthlike planet. Amazon
Foundation by Isaac Asimov
For twelve thousand years the Galactic Empire has ruled supreme. Now it is dying. Only Hari Seldon, creator of the revolutionary science of psychohistory, can see into the future—a dark age of ignorance, barbarism, and warfare that will last thirty thousand years. To preserve knowledge…