Live coverage: Japanese cargo craft arrives at space station

Carrying more science research gear to the International Space Station than ever launched before by U.S. commercial logistics vehicles, the next Orbital ATK Cygnus freighter takes flight Tuesday.

SpaceX is replacing two engines on the Falcon 9 booster set to launch four astronauts next month on the company’s first operational Crew Dragon flight to the International Space Station, following an investigation that revealed a subcontractor failed to adequately clean out narrow vent ports on multiple engines across the company’s fleet, officials said Wednesday.

Russia says a design bug from the pairing of a Progress spacecraft with an upgraded version of the venerable Soyuz launcher led to the loss of a resupply mission bound for the International Space Station on April 28.