As part of NASA’s efforts to expand commercial resupply in low Earth orbit, Sierra Space’s uncrewed spaceplane arrived at NASA’s Kennedy Space Center in Florida ahead of its first flight to the International Space Station. As part of NASA’s efforts to expand commercial resupply in low Earth orbit, Sierra Space’s uncrewed spaceplane arrived at NASA’s Kennedy Space Center in Florida ahead of its first flight to the International Space Station. Space Exploration Phys.org – latest science and technology news stories