Loaded with investigations into chemotherapy drugs with reduced side effects and radiation detectors for homeland security, a plant-growing chamber to promote future food harvesting in space and a technology demonstration for sample-return capsules, a commercial Cygnus cargo vessel will be sent to the International Space Station next week.

NASA expects to select commercial contractors to resupply the International Space Station in September, three months later than the agency’s previous timetable under a competition for cargo deliveries beginning in 2018.

International Space Station managers have named crew members to future expeditions to the research lab in 2017 and 2018, including the first German commander of a space mission and Canada’s third astronaut to fly a long-duration residency on the complex.