After 241 days suspended between Earth and the void, three human beings returned to gravity on a Kazakhstan steppe, their bodies carrying the weight of a planet they had spent eight months watching from above. NASA astronaut Chris Williams and Russian cosmonauts Sergey Kud-Sverchkov and Sergey Mikaev completed their International Space Station mission Sunday morning, landing near Dzhezkazgan aboard the Soyuz MS-28 after 102 million miles and 3,856 orbits. Their return is a quiet reminder that the work of human spaceflight is not heroic in the cinematic sense but rhythmic — a steady turning of