Astronauts on the space station are testing new health tools. Two crew members scanned each other's organs with a small ultrasound device. A tablet screen showed them where to place the device. A medical expert on Earth guided them live during the scan. In the future, crews may use such tools without help from the ground.
Another astronaut studied his own blood in a small laboratory. The samples will help show how space affects the body's power to fight illness. The crew also packed their bags for the trip home. The next team will not arrive before October 1. Before that, everyone practiced using emergency masks together.