Additionally, all seven orbital residents are also remaining busy with ongoing research in the fields of human biology, space physics, and robotics that they are involved in.

The SpaceX Dragon cargo rocket, which is attached to the Falcon 9 rocket at the Kennedy Space Center in Florida, is due to be rolled out to the launch pad as soon as possible.

A launch is scheduled for 8:44 p.m. Eastern Daylight Time (EDT) on Thursday, carrying 5,800 pounds of science experiments and supplies to replenish the orbiting lab, which has been running low on supplies. On Saturday, 11:20 a.m., Dragon will dock to the forward port of the Harmony module after orbiting Earth for more than a day-and-a-half.

A NASA astronaut spent an hour-and-a-half Monday morning studying Dragon's approach and rendezvous maneuvers. She and astronaut Bob Hines will monitor Dragon's automated docking to Harmony on Saturday morning.

A live broadcast of Dragon's arrival to the space station for a month-long stay will be available to NASA TV viewers on the agency's app and website starting at 10 a.m. on Saturday.

As part of the fitness test on the exercise cycle located in the U.S. Destiny laboratory module, Watkins took turns with Hines and fellow NASA astronaut Kjell Lindgren.

For the VO2Max exercise study, the three astronauts wore sensors on their bodies and pedaled for an hour and a half to measure their aerobic capacity. To test the autonomous navigation capabilities of Astrobee robotic free-flyers inside Kibo, Watkins activated their free-flyers.

Lindgren completed his day testing the Butterfly IQ Ultrasound device for its mobile and remote medical capabilities. Hines swapped fiber optic cable samples inside the Microgravity Science Glovebox for the Intelligent Glass Optics study.

The sixth spacewalk of the year is planned for July 21, with a Roscosmos cosmonaut and an ESA astronaut participating. The Russian Orlan spacesuits were activated and inspected by Commander Oleg Artemyev and Flight Engineer Samantha Cristoforetti all day on Monday. 

Using the European Robotic Arm (ERA), they will configure the Russian segment of the station for approximately seven hours. A half-hour assessment of Denis Matveev's cardiovascular system started his day, followed by the replacement of smoke detectors and the check of sensors within the Zvezda service module by Artemyev. 

During the spacewalk scheduled for next week, Sergey Korsakov, the flight engineer on board the ISS Progress 80 cargo craft, continued to work on water transfers inside the craft.