On a frigid morning in early December, a team of NASA rocket scientists will huddle in the control room in Ny-Ålesund, Svalbard, a remote archipelago off the northern coast of Norway. Here at the world’s northernmost rocket range, operated by Norway’s Andøya Space Center, the clock may read 8 a.m., but the Sun won’t be up—by that time, it won’t have peeked over the horizon in more than a month.