Flight controllers ordered two astronauts to terminate a spacewalk outside the International Space Station Friday after one of them reported a small amount of water leaking into his space helmet.

Two days after departing from a launch pad on Florida’s Space Coast, a SpaceX Dragon cargo capsule arrived at the International Space Station on Wednesday with more than 6,400 pounds of experiments and supplies after concluding an automated laser-guided approach.

Japan’s sixth HTV supply ship is slated to depart a picturesque spaceport on Tanegashima Island on Friday to start a four-day pursuit of the International Space Station with a cache of experiments, supplies and six lithium-ion batteries to begin overhauling the orbiting lab’s vast electrical system.