Live coverage: SpaceX supply ship returns to Earth

Japan’s eighth robotic resupply mission to the International Space Station arrived at its destination Saturday, delivering six fresh lithium-ion batteries, science experiments, CubeSats and other gear to the research outpost.

The second fully commercial astronaut flight to the International Space Station will have just two opportunities to launch Sunday and Monday, or else wait until after an upcoming SpaceX resupply mission next month to deliver a new set of high-priority solar arrays to the complex.

SpaceX plans two Falcon Heavy launches this year for the U.S. Space Force in July and October, and United Launch Alliance has four national security space missions on its 2021 schedule, according to a military spokesperson.