SpaceX targets Sunday-night launch for space station mission

Nasa astronauts, from left, Shannon Walker, Victor Glover, and Michael Hopkins, and Japan Aerospace Exploration Agency astronaut Soichi Noguchi leave the Operations and Checkout Building on their way to launch pad 39A (John Raoux/AP)
Nasa astronauts, from left, Shannon Walker, Victor Glover, and Michael Hopkins, and Japan Aerospace Exploration Agency astronaut Soichi Noguchi leave the Operations and Checkout Building on their way to launch pad 39A (John Raoux/AP)