Live coverage: Cygnus supply ship departs space station

The Japanese company ispace could become the first commercial firm to achieve a controlled landing on the moon Tuesday, when its privately-funded unpiloted Hakuto-R lander attempts to touch down inside a crater to deliver a small Emirati rover and other research payloads to the lunar surface.

SpaceX called off the planned launch of a Falcon 9 rocket Saturday less than 15 seconds before liftoff to investigate the “slightly odd” behavior of the vehicle’s upper stage engine steering system, company chief Elon Musk said.

A United Launch Alliance arrived at Cape Canaveral’s Complex 41 launch pad Friday morning after rolling out of its vertical hangar with three U.S. Air Force satellites designed to provide communications to military leaders and test new in-orbit inspection and surveillance technology.