A SpaceX Dragon cargo capsule splashed down in the Pacific Ocean at 2:51 p.m. EDT Wednesday, concluding a successful International Space Station resupply mission. MELBOURNE, Fla. -- A SpaceX Dragon capsule splashed down in the Pacific Ocean just before 3 p.m. ET Wednesday to wrap up a month-long visit to the International Space Station, returning to Earth with more than 3,700 pounds of equipment and science research. "The Dragon spacecraft has served us well," British astronaut Tim Peake radioed to mission controllers in Houston after the Dragon floated from the outpost in darkness at 9:19 a.m., released by its robotic arm. "It's good to see it departing full of science, and we wish it a safe recovery back to planet Earth." Among the 1,300 pounds of experiment on board were more than 1,000 tubes of blood, urine and saliva collected from former NASA astronaut Scott Kelly before his year-long ISS mission ended in March.

Fresh supplies are due to ship out late Tuesday for the International Space Station, where the shelves finally are getting full after a string of failed deliveries. An unmanned Atlas V rocket is scheduled to blast off at 11:05 p.m. by the light of a nearly full moon. Orbital ATK's Cygnus capsule holds nearly 8,000 pounds of food, equipment and scientific research for NASA, including a commercial-quality 3-D printer anyone can rent and experimental robotic grippers modeled after the thousands of sticky hairs on geckos' feet. There's also a fire experiment that will remain on the Cygnus. Researchers will ignite a large-scale blaze, in a contained box, to see how it spreads in weightlessness. The fire will not be set until the Cygnus departs the space station in May, full of trash for a destructive re-entry.