NASA replaces astronaut on Boeing's first crew launch
https://phys.org/news/2019-01-nasa-astronaut-boeing-crew.html
Boeing plans to launch its first Starliner capsule without a crew this spring, followed by a launch with astronauts this summer to the International Space Station.
SpaceX—NASA's other commercial crew partner—could launch its Dragon capsule, minus a crew, next month. The capsule and Falcon rocket were on the launch pad Wednesday for a test engine firing.