A day after liftoff, a SpaceX crew capsule reached the International Space Station, delivering replacements for NASA's stranded astronauts. The four newcomers from the U.S., Japan, and Russia will train with Butch Wilmore and Suni Williams before the duo departs later this week. Wilmore and Williams launched last June on Boeing's troubled Starliner for a weeklong mission but were stranded when NASA deemed the capsule too faulty to return. Their ride arrived in September, but battery issues delayed their replacements, pushing their return to mid-March.