Before 2 astronauts can return to Earth via SpaceX's Crew Dragon capsule, they'll use a robotic arm to check their ship for space-junk damage

SpaceX on May 30 launched NASA astronauts Bob Behnken and Doug Hurley to orbit — the private company's first flight of humans. Behnken and Hurley rode SpaceX's new Crew Dragon spaceship, developed with NASA's help, to the...