Alien Clay: An incredible science fiction tale of first contact with the unknown Adrian Tchaikovsky4.1
Merlin’s Tour of the Universe, Revised and Updated for the Twenty-First Century: A Traveler’s Guide to Blue Moons and Black Holes, Mars, Stars, and Everything Far Neil deGrasse Tyson4.4
Martian Summer: My Ninety Days with Interplanetary Pioneers, Temperamental Robots, and NASA's Phoenix Mars Mission Andrew Kessler